id	sid	eid	entity	type
ejpam-6723	1	1	european journal	ORG
ejpam-6723	1	2	2025	DATE
ejpam-6723	1	3	18	CARDINAL
ejpam-6723	1	4	4	CARDINAL
ejpam-6723	1	5	6723	CARDINAL
ejpam-6723	1	6	1307-5543	DATE
ejpam-6723	1	7	new york	GPE
ejpam-6723	1	8	van der pol-duffing	PERSON
ejpam-6723	1	9	ibrahim alraddadi 1,∗	PERSON
ejpam-6723	1	10	saad m. almuaddi 2,3,∗	PERSON
ejpam-6723	1	11	islamic university	ORG
ejpam-6723	1	12	madinah	PERSON
ejpam-6723	1	13	saudi arabia	GPE
ejpam-6723	1	14	imam abdulrahman bin faisal university	PERSON
ejpam-6723	1	15	p.o.	ORG
ejpam-6723	1	16	1982	DATE
ejpam-6723	1	17	31441	DATE
ejpam-6723	1	18	saudi arabia	GPE
ejpam-6723	1	19	3	CARDINAL
ejpam-6723	1	20	imam abdulrahman bin faisal university	PERSON
ejpam-6723	1	21	31441	DATE
ejpam-6723	1	22	saudi arabia	GPE
ejpam-6723	2	1	the van der pol-duffing	PERSON
ejpam-6723	4	1	the van der pol-duffing	PERSON
ejpam-6723	4	2	standard van der pol oscillators.	ORG
ejpam-6723	5	1	0.25	CARDINAL
ejpam-6723	5	2	1.2	CARDINAL
ejpam-6723	5	3	1.5	CARDINAL
ejpam-6723	6	1	2:1	CARDINAL
ejpam-6723	7	1	41	CARDINAL
ejpam-6723	7	2	kyr	ORG
ejpam-6723	7	3	100	CARDINAL
ejpam-6723	7	4	kyr	ORG
ejpam-6723	7	5	4	CARDINAL
ejpam-6723	7	6	2020	DATE
ejpam-6723	7	7	4c23	CARDINAL
ejpam-6723	7	8	37c25	DATE
ejpam-6723	7	9	37-04	CARDINAL
ejpam-6723	7	10	37c35	DATE
ejpam-6723	7	11	34c25	CARDINAL
ejpam-6723	7	12	1	CARDINAL
ejpam-6723	8	1	decades	DATE
ejpam-6723	8	2	1	CARDINAL
ejpam-6723	9	1	41	CARDINAL
ejpam-6723	9	2	kyr	ORG
ejpam-6723	9	3	19-23 kyr	QUANTITY
ejpam-6723	11	1	ialraddadi@iu.edu.sa	PERSON
ejpam-6723	11	2	ibrahim alraddadi	PERSON
ejpam-6723	11	3	smuaddi@iau.edu.sa	PERSON
ejpam-6723	11	4	saad m. almuaddi	PERSON
ejpam-6723	12	1	1	CARDINAL
ejpam-6723	12	2	2025	CARDINAL
ejpam-6723	14	1	j. pure	PERSON
ejpam-6723	14	2	18	CARDINAL
ejpam-6723	14	3	4	CARDINAL
ejpam-6723	14	4	2025	CARDINAL
ejpam-6723	14	5	6723 2	DATE
ejpam-6723	14	6	20	CARDINAL
ejpam-6723	14	7	kyr	ORG
ejpam-6723	15	1	approximately 1 myr ago	DATE
ejpam-6723	15	2	41	CARDINAL
ejpam-6723	15	3	kyr	ORG
ejpam-6723	15	4	100	CARDINAL
ejpam-6723	15	5	kyr	ORG
ejpam-6723	15	6	2	CARDINAL
ejpam-6723	17	1	linear	ORG
ejpam-6723	17	2	1	CARDINAL
ejpam-6723	17	3	3	CARDINAL
ejpam-6723	18	1	van der pol oscillator	PERSON
ejpam-6723	18	2	van der pol	PERSON
ejpam-6723	18	3	1926	DATE
ejpam-6723	19	1	4	CARDINAL
ejpam-6723	20	1	van der pol	PERSON
ejpam-6723	20	2	van der mark	PERSON
ejpam-6723	20	3	1927	DATE
ejpam-6723	20	4	1928	DATE
ejpam-6723	21	1	5	CARDINAL
ejpam-6723	21	2	first	ORDINAL
ejpam-6723	22	1	1	CARDINAL
ejpam-6723	22	2	3	CARDINAL
ejpam-6723	23	1	van der pol oscillators	PERSON
ejpam-6723	23	2	2012	DATE
ejpam-6723	24	1	3	CARDINAL
ejpam-6723	24	2	van der pol models	PERSON
ejpam-6723	25	1	de saedeleer et al	ORG
ejpam-6723	26	1	2013	DATE
ejpam-6723	27	1	1	CARDINAL
ejpam-6723	27	2	ashwin	PERSON
ejpam-6723	27	3	2018	DATE
ejpam-6723	28	1	2	CARDINAL
ejpam-6723	28	2	6	CARDINAL
ejpam-6723	28	3	7	CARDINAL
ejpam-6723	28	4	8	CARDINAL
ejpam-6723	29	1	9	CARDINAL
ejpam-6723	30	1	guckenheimer et al	PERSON
ejpam-6723	31	1	2003	DATE
ejpam-6723	32	1	9	CARDINAL
ejpam-6723	32	2	van der pol systems	ORG
ejpam-6723	32	3	ashwin et al	PERSON
ejpam-6723	33	1	2018	DATE
ejpam-6723	34	1	10	CARDINAL
ejpam-6723	34	2	van der pol-duffing	PERSON
ejpam-6723	35	1	2	CARDINAL
ejpam-6723	35	2	2.1	CARDINAL
ejpam-6723	36	1	3	CARDINAL
ejpam-6723	36	2	10	CARDINAL
ejpam-6723	38	1	ω	ORG
ejpam-6723	41	1	j. pure	PERSON
ejpam-6723	41	2	18	CARDINAL
ejpam-6723	41	3	4	CARDINAL
ejpam-6723	41	4	2025	CARDINAL
ejpam-6723	41	5	6723 3	DATE
ejpam-6723	41	6	20	CARDINAL
ejpam-6723	42	1	linear systems	ORG
ejpam-6723	44	1	lyapunov	PERSON
ejpam-6723	45	1	10	CARDINAL
ejpam-6723	47	1	van der pol-duffing	PERSON
ejpam-6723	47	2	the van der pol equation	FAC
ejpam-6723	47	3	11–13	CARDINAL
ejpam-6723	49	1	2.2	CARDINAL
ejpam-6723	50	1	van der pol	PERSON
ejpam-6723	50	2	van der pol oscillator	PERSON
ejpam-6723	50	3	10	CARDINAL
ejpam-6723	51	1	0	CARDINAL
ejpam-6723	52	1	1	CARDINAL
ejpam-6723	52	2	the van der pol-duffing	FAC
ejpam-6723	53	1	+ 1.2y3	DATE
ejpam-6723	53	2	2	CARDINAL
ejpam-6723	54	1	10	CARDINAL
ejpam-6723	55	1	11.11	CARDINAL
ejpam-6723	55	2	•	CARDINAL
ejpam-6723	55	3	•	CARDINAL
ejpam-6723	55	4	•	CARDINAL
ejpam-6723	55	5	52.0	CARDINAL
ejpam-6723	56	1	j. pure	PERSON
ejpam-6723	56	2	18	CARDINAL
ejpam-6723	56	3	4	CARDINAL
ejpam-6723	56	4	2025	CARDINAL
ejpam-6723	56	5	6723 4	DATE
ejpam-6723	56	6	1	CARDINAL
ejpam-6723	56	7	1	CARDINAL
ejpam-6723	56	8	kyr	ORG
ejpam-6723	57	1	first	ORDINAL
ejpam-6723	57	2	9	CARDINAL
ejpam-6723	57	3	x′	CARDINAL
ejpam-6723	57	4	1	CARDINAL
ejpam-6723	57	5	sin(2πωt)−	ORG
ejpam-6723	57	6	3	CARDINAL
ejpam-6723	58	1	4	CARDINAL
ejpam-6723	58	2	1	CARDINAL
ejpam-6723	58	3	3-4	CARDINAL
ejpam-6723	60	1	1	CARDINAL
ejpam-6723	60	2	3-4	CARDINAL
ejpam-6723	61	1	van der pol duffing oscillators	ORG
ejpam-6723	63	1	1	CARDINAL
ejpam-6723	63	2	x′	CARDINAL
ejpam-6723	63	3	g(y)−	PERSON
ejpam-6723	63	4	5	CARDINAL
ejpam-6723	65	1	6	CARDINAL
ejpam-6723	65	2	ω	ORDINAL
ejpam-6723	66	1	j. pure	PERSON
ejpam-6723	66	2	18	CARDINAL
ejpam-6723	66	3	4	CARDINAL
ejpam-6723	66	4	2025	CARDINAL
ejpam-6723	66	5	6723 5	DATE
ejpam-6723	67	1	3.1	CARDINAL
ejpam-6723	68	1	1	CARDINAL
ejpam-6723	68	2	5)–(7	CARDINAL
ejpam-6723	69	1	guckenheimer et al	PERSON
ejpam-6723	70	1	9	CARDINAL
ejpam-6723	70	2	0	CARDINAL
ejpam-6723	73	1	•	CARDINAL
ejpam-6723	73	2	−1	DATE
ejpam-6723	74	1	1− y2	QUANTITY
ejpam-6723	74	2	0 •	CARDINAL
ejpam-6723	74	3	1	CARDINAL
ejpam-6723	75	1	1− y2	QUANTITY
ejpam-6723	76	1	0	CARDINAL
ejpam-6723	76	2	2πn	ORDINAL
ejpam-6723	76	3	9	CARDINAL
ejpam-6723	76	4	2/3	CARDINAL
ejpam-6723	76	5	1	CARDINAL
ejpam-6723	76	6	0	CARDINAL
ejpam-6723	76	7	2πn	ORDINAL
ejpam-6723	76	8	10	CARDINAL
ejpam-6723	76	9	3.2	CARDINAL
ejpam-6723	77	1	x′	DATE
ejpam-6723	77	2	11	CARDINAL
ejpam-6723	77	3	0	CARDINAL
ejpam-6723	79	1	12	CARDINAL
ejpam-6723	79	2	ω	ORDINAL
ejpam-6723	79	3	13	CARDINAL
ejpam-6723	79	4	dx	ORG
ejpam-6723	80	1	0	CARDINAL
ejpam-6723	80	2	14	CARDINAL
ejpam-6723	81	1	15	CARDINAL
ejpam-6723	82	1	0	CARDINAL
ejpam-6723	82	2	16	CARDINAL
ejpam-6723	84	1	j. pure	PERSON
ejpam-6723	84	2	18	CARDINAL
ejpam-6723	84	3	4	CARDINAL
ejpam-6723	84	4	2025	CARDINAL
ejpam-6723	84	5	6723 6	DATE
ejpam-6723	84	6	20 3.3	CARDINAL
ejpam-6723	85	1	desingularized	PERSON
ejpam-6723	85	2	+ 1.2y3	DATE
ejpam-6723	85	3	10	CARDINAL
ejpam-6723	86	1	x′	DATE
ejpam-6723	87	1	0	CARDINAL
ejpam-6723	87	2	17	CARDINAL
ejpam-6723	87	3	1− y2	TIME
ejpam-6723	87	4	1	CARDINAL
ejpam-6723	88	1	0	CARDINAL
ejpam-6723	88	2	1−	ORDINAL
ejpam-6723	89	1	18	CARDINAL
ejpam-6723	90	1	1)s	ORDINAL
ejpam-6723	90	2	1	CARDINAL
ejpam-6723	90	3	19	CARDINAL
ejpam-6723	93	1	20	CARDINAL
ejpam-6723	93	2	2	CARDINAL
ejpam-6723	93	3	19-20	CARDINAL
ejpam-6723	93	4	0	CARDINAL
ejpam-6723	93	5	0.55	CARDINAL
ejpam-6723	93	6	1.5	CARDINAL
ejpam-6723	94	1	four	CARDINAL
ejpam-6723	95	1	19-20	CARDINAL
ejpam-6723	95	2	0.5	CARDINAL
ejpam-6723	95	3	0.55	CARDINAL
ejpam-6723	95	4	1.5	CARDINAL
ejpam-6723	96	1	two	CARDINAL
ejpam-6723	96	2	−1	DATE
ejpam-6723	98	1	j. pure	PERSON
ejpam-6723	98	2	18	CARDINAL
ejpam-6723	98	3	4	CARDINAL
ejpam-6723	98	4	2025	CARDINAL
ejpam-6723	98	5	6723 7	DATE
ejpam-6723	98	6	0.25	CARDINAL
ejpam-6723	98	7	0.5	CARDINAL
ejpam-6723	98	8	3	CARDINAL
ejpam-6723	98	9	19-20	CARDINAL
ejpam-6723	98	10	1.2	CARDINAL
ejpam-6723	98	11	3.5	CARDINAL
ejpam-6723	98	12	ω	CARDINAL
ejpam-6723	98	13	1.5	CARDINAL
ejpam-6723	99	1	four	CARDINAL
ejpam-6723	100	1	19-20	CARDINAL
ejpam-6723	100	2	1.2	CARDINAL
ejpam-6723	101	1	3.5	CARDINAL
ejpam-6723	101	2	ω	CARDINAL
ejpam-6723	101	3	1.5	CARDINAL
ejpam-6723	102	1	four	CARDINAL
ejpam-6723	104	1	j. pure	PERSON
ejpam-6723	104	2	18	CARDINAL
ejpam-6723	104	3	4	CARDINAL
ejpam-6723	104	4	2025	CARDINAL
ejpam-6723	104	5	6723 8	DATE
ejpam-6723	104	6	0.8	CARDINAL
ejpam-6723	104	7	1.2	CARDINAL
ejpam-6723	104	8	4	CARDINAL
ejpam-6723	104	9	19-20	CARDINAL
ejpam-6723	104	10	0.8	CARDINAL
ejpam-6723	104	11	3.5	CARDINAL
ejpam-6723	104	12	ω	CARDINAL
ejpam-6723	104	13	1.5	CARDINAL
ejpam-6723	106	1	19-20	CARDINAL
ejpam-6723	106	2	1.2	CARDINAL
ejpam-6723	106	3	3.5	CARDINAL
ejpam-6723	106	4	ω	CARDINAL
ejpam-6723	106	5	1.5	CARDINAL
ejpam-6723	107	1	four	CARDINAL
ejpam-6723	108	1	2	CARDINAL
ejpam-6723	108	2	4	CARDINAL
ejpam-6723	108	3	19-20	CARDINAL
ejpam-6723	108	4	0	CARDINAL
ejpam-6723	108	5	1.2	CARDINAL
ejpam-6723	111	1	3.4	CARDINAL
ejpam-6723	112	1	1	CARDINAL
ejpam-6723	112	2	0.2	MONEY
ejpam-6723	112	3	22	CARDINAL
ejpam-6723	112	4	1− 3.6y2)2 + 16ωπa	DATE
ejpam-6723	112	5	2	CARDINAL
ejpam-6723	112	6	23	CARDINAL
ejpam-6723	113	1	j. pure	PERSON
ejpam-6723	113	2	18	CARDINAL
ejpam-6723	113	3	4	CARDINAL
ejpam-6723	113	4	2025	CARDINAL
ejpam-6723	113	5	6723 9	DATE
ejpam-6723	114	1	poincaré	PERSON
ejpam-6723	114	2	4.1	CARDINAL
ejpam-6723	115	1	guckenheimer et al	PERSON
ejpam-6723	116	1	2003	DATE
ejpam-6723	117	1	9	CARDINAL
ejpam-6723	117	2	2	CARDINAL
ejpam-6723	118	1	24	CARDINAL
ejpam-6723	118	2	•	CARDINAL
ejpam-6723	118	3	2	CARDINAL
ejpam-6723	118	4	1	CARDINAL
ejpam-6723	118	5	•	CARDINAL
ejpam-6723	118	6	fold	CARDINAL
ejpam-6723	118	7	l+	ORG
ejpam-6723	118	8	y = −2	ORG
ejpam-6723	118	9	•	CARDINAL
ejpam-6723	119	1	•	CARDINAL
ejpam-6723	119	2	fold	CARDINAL
ejpam-6723	119	3	2	CARDINAL
ejpam-6723	119	4	1	CARDINAL
ejpam-6723	119	5	j−(θ,−1	PERSON
ejpam-6723	120	1	2	CARDINAL
ejpam-6723	120	2	14	CARDINAL
ejpam-6723	120	3	4.2	CARDINAL
ejpam-6723	121	1	poincaré	PERSON
ejpam-6723	122	1	van der pol oscillator	PERSON
ejpam-6723	123	1	1	CARDINAL
ejpam-6723	125	1	15	CARDINAL
ejpam-6723	125	2	asymmetric van der pol	PERSON
ejpam-6723	128	1	5	CARDINAL
ejpam-6723	128	2	5.1	CARDINAL
ejpam-6723	129	1	2	CARDINAL
ejpam-6723	129	2	5	CARDINAL
ejpam-6723	133	1	j. pure	PERSON
ejpam-6723	133	2	18	CARDINAL
ejpam-6723	133	3	4	CARDINAL
ejpam-6723	133	4	2025	CARDINAL
ejpam-6723	133	5	6723 10 of 20	DATE
ejpam-6723	133	6	1	CARDINAL
ejpam-6723	133	7	6	CARDINAL
ejpam-6723	136	1	5	CARDINAL
ejpam-6723	136	2	first	ORDINAL
ejpam-6723	136	3	19-20	CARDINAL
ejpam-6723	136	4	first	ORDINAL
ejpam-6723	138	1	first	ORDINAL
ejpam-6723	138	2	0	CARDINAL
ejpam-6723	141	1	j. pure	PERSON
ejpam-6723	141	2	18	CARDINAL
ejpam-6723	141	3	4	CARDINAL
ejpam-6723	141	4	2025	CARDINAL
ejpam-6723	141	5	6723 11	DATE
ejpam-6723	141	6	6	CARDINAL
ejpam-6723	141	7	first	ORDINAL
ejpam-6723	144	1	first	ORDINAL
ejpam-6723	146	1	first	ORDINAL
ejpam-6723	148	1	5.2	CARDINAL
ejpam-6723	149	1	arnold	PERSON
ejpam-6723	152	1	j. pure	PERSON
ejpam-6723	152	2	18	CARDINAL
ejpam-6723	152	3	4	CARDINAL
ejpam-6723	152	4	2025	CARDINAL
ejpam-6723	152	5	6723 12	DATE
ejpam-6723	152	6	20	CARDINAL
ejpam-6723	154	1	19	CARDINAL
ejpam-6723	154	2	20	CARDINAL
ejpam-6723	155	1	16	CARDINAL
ejpam-6723	156	1	6(a	CARDINAL
ejpam-6723	156	2	6(c	CARDINAL
ejpam-6723	157	1	one	CARDINAL
ejpam-6723	157	2	one	CARDINAL
ejpam-6723	158	1	arnold	GPE
ejpam-6723	159	1	5.3	CARDINAL
ejpam-6723	160	1	arnold	PERSON
ejpam-6723	161	1	van der pol oscillator	PERSON
ejpam-6723	162	1	1:1	CARDINAL
ejpam-6723	162	2	2:1	CARDINAL
ejpam-6723	162	3	3:1	CARDINAL
ejpam-6723	162	4	41kyr	CARDINAL
ejpam-6723	162	5	100kyr	CARDINAL
ejpam-6723	163	1	15	CARDINAL
ejpam-6723	163	2	van der pol oscillator	PERSON
ejpam-6723	164	1	0	CARDINAL
ejpam-6723	164	2	1.2	CARDINAL
ejpam-6723	164	3	1:1	CARDINAL
ejpam-6723	166	1	0.25	CARDINAL
ejpam-6723	166	2	2	CARDINAL
ejpam-6723	166	3	3	DATE
ejpam-6723	166	4	4	DATE
ejpam-6723	166	5	8	CARDINAL
ejpam-6723	167	1	0.8	CARDINAL
ejpam-6723	167	2	1 to 25	CARDINAL
ejpam-6723	169	1	van der pol-duffing	PERSON
ejpam-6723	170	1	17	CARDINAL
ejpam-6723	172	1	j. pure	PERSON
ejpam-6723	172	2	18	CARDINAL
ejpam-6723	172	3	4	CARDINAL
ejpam-6723	172	4	2025	CARDINAL
ejpam-6723	172	5	6723 13	DATE
ejpam-6723	172	6	20 5.4	CARDINAL
ejpam-6723	173	1	van der pol-duffing	PERSON
ejpam-6723	173	2	0	CARDINAL
ejpam-6723	174	1	2003	DATE
ejpam-6723	174	2	1:1	CARDINAL
ejpam-6723	174	3	2:1	CARDINAL
ejpam-6723	174	4	3:1	CARDINAL
ejpam-6723	175	1	ω	CARDINAL
ejpam-6723	175	2	1	CARDINAL
ejpam-6723	175	3	100	CARDINAL
ejpam-6723	175	4	kyr	ORG
ejpam-6723	175	5	2.44	CARDINAL
ejpam-6723	175	6	41	CARDINAL
ejpam-6723	175	7	kyr	ORG
ejpam-6723	175	8	0.1	CARDINAL
ejpam-6723	175	9	0.005-0.07	CARDINAL
ejpam-6723	176	1	1.2-0.8 ma	QUANTITY
ejpam-6723	177	1	5.5	CARDINAL
ejpam-6723	177	2	ω	ORG
ejpam-6723	177	3	7	CARDINAL
ejpam-6723	178	1	0	CARDINAL
ejpam-6723	178	2	1:1	CARDINAL
ejpam-6723	181	1	j. pure	PERSON
ejpam-6723	181	2	18	CARDINAL
ejpam-6723	181	3	4	CARDINAL
ejpam-6723	181	4	2025	CARDINAL
ejpam-6723	181	5	6723 14	DATE
ejpam-6723	181	6	20	CARDINAL
ejpam-6723	181	7	0	CARDINAL
ejpam-6723	181	8	3:1	CARDINAL
ejpam-6723	182	1	0 1 2 3 4	QUANTITY
ejpam-6723	182	2	0	CARDINAL
ejpam-6723	182	3	0	CARDINAL
ejpam-6723	182	4	0 1 2 3 4	QUANTITY
ejpam-6723	182	5	0	CARDINAL
ejpam-6723	182	6	7	CARDINAL
ejpam-6723	182	7	arnold	PERSON
ejpam-6723	182	8	ω	ORG
ejpam-6723	184	1	0.25	CARDINAL
ejpam-6723	184	2	1	CARDINAL
ejpam-6723	184	3	ω	CARDINAL
ejpam-6723	184	4	4	CARDINAL
ejpam-6723	185	1	0.5	CARDINAL
ejpam-6723	185	2	one	CARDINAL
ejpam-6723	185	3	1	CARDINAL
ejpam-6723	185	4	0.8	CARDINAL
ejpam-6723	185	5	arnold	PERSON
ejpam-6723	185	6	1	CARDINAL
ejpam-6723	185	7	one	CARDINAL
ejpam-6723	185	8	2:1	CARDINAL
ejpam-6723	185	9	0	CARDINAL
ejpam-6723	186	1	1.2	CARDINAL
ejpam-6723	186	2	1.5	CARDINAL
ejpam-6723	186	3	only one	CARDINAL
ejpam-6723	186	4	2:1	CARDINAL
ejpam-6723	186	5	0	CARDINAL
ejpam-6723	187	1	14	CARDINAL
ejpam-6723	189	1	j. pure	PERSON
ejpam-6723	189	2	18	CARDINAL
ejpam-6723	189	3	4	CARDINAL
ejpam-6723	189	4	2025	CARDINAL
ejpam-6723	189	5	6723 15	DATE
ejpam-6723	189	6	20	CARDINAL
ejpam-6723	190	1	16	CARDINAL
ejpam-6723	191	1	0.25	CARDINAL
ejpam-6723	191	2	1.2	CARDINAL
ejpam-6723	192	1	0.25	CARDINAL
ejpam-6723	192	2	1	CARDINAL
ejpam-6723	192	3	4	CARDINAL
ejpam-6723	193	1	41	CARDINAL
ejpam-6723	193	2	kyr	ORG
ejpam-6723	194	1	16	CARDINAL
ejpam-6723	194	2	0.5	CARDINAL
ejpam-6723	194	3	7(b	CARDINAL
ejpam-6723	194	4	1	CARDINAL
ejpam-6723	195	1	18	CARDINAL
ejpam-6723	195	2	0.8	CARDINAL
ejpam-6723	195	3	arnold	PERSON
ejpam-6723	195	4	1	CARDINAL
ejpam-6723	196	1	one	CARDINAL
ejpam-6723	198	1	1.2	CARDINAL
ejpam-6723	199	1	1.5	CARDINAL
ejpam-6723	200	1	one	CARDINAL
ejpam-6723	200	2	2:1	CARDINAL
ejpam-6723	200	3	0	CARDINAL
ejpam-6723	201	1	5.6	CARDINAL
ejpam-6723	202	1	1920	DATE
ejpam-6723	204	1	41	CARDINAL
ejpam-6723	204	2	100	CARDINAL
ejpam-6723	204	3	kyr	ORG
ejpam-6723	205	1	0.8-1.0	MONEY
ejpam-6723	205	2	2:1	CARDINAL
ejpam-6723	205	3	41	CARDINAL
ejpam-6723	205	4	kyr	ORG
ejpam-6723	205	5	20.5	CARDINAL
ejpam-6723	205	6	kyr	ORG
ejpam-6723	205	7	1:1	CARDINAL
ejpam-6723	205	8	100	CARDINAL
ejpam-6723	205	9	kyr	ORG
ejpam-6723	206	1	j. pure	PERSON
ejpam-6723	206	2	18	CARDINAL
ejpam-6723	206	3	4	CARDINAL
ejpam-6723	206	4	2025	CARDINAL
ejpam-6723	206	5	6723 16	DATE
ejpam-6723	206	6	20	CARDINAL
ejpam-6723	207	1	6	CARDINAL
ejpam-6723	207	2	the van der pol-duffing	ORG
ejpam-6723	208	1	monotonic	ORG
ejpam-6723	208	2	1	CARDINAL
ejpam-6723	209	1	0	CARDINAL
ejpam-6723	209	2	1.2	CARDINAL
ejpam-6723	210	1	0.25	CARDINAL
ejpam-6723	210	2	1	CARDINAL
ejpam-6723	210	3	ω	CARDINAL
ejpam-6723	210	4	4	CARDINAL
ejpam-6723	211	1	0.5	CARDINAL
ejpam-6723	211	2	1	CARDINAL
ejpam-6723	212	1	0.8	CARDINAL
ejpam-6723	212	2	arnold	PERSON
ejpam-6723	212	3	1	CARDINAL
ejpam-6723	212	4	one	CARDINAL
ejpam-6723	212	5	2	CARDINAL
ejpam-6723	212	6	1	CARDINAL
ejpam-6723	212	7	0	CARDINAL
ejpam-6723	213	1	1.2	CARDINAL
ejpam-6723	213	2	1.5	CARDINAL
ejpam-6723	213	3	one	CARDINAL
ejpam-6723	213	4	2	CARDINAL
ejpam-6723	213	5	1	CARDINAL
ejpam-6723	213	6	ω ≈ 2	FAC
ejpam-6723	213	7	0	CARDINAL
ejpam-6723	215	1	asymmetric van der pol-duffing	PERSON
ejpam-6723	216	1	asymmetric van der pol-duffing	PERSON
ejpam-6723	217	1	first	ORDINAL
ejpam-6723	218	1	second	ORDINAL
ejpam-6723	219	1	third	ORDINAL
ejpam-6723	220	1	fourth	ORDINAL
ejpam-6723	221	1	j. pure	PERSON
ejpam-6723	221	2	18	CARDINAL
ejpam-6723	221	3	4	CARDINAL
ejpam-6723	221	4	2025	CARDINAL
ejpam-6723	221	5	6723 17	DATE
ejpam-6723	221	6	20	CARDINAL
ejpam-6723	223	1	two	CARDINAL
ejpam-6723	224	1	i. alraddadi	PERSON
ejpam-6723	225	1	s.m	PERSON
ejpam-6723	225	2	almuaddi	PERSON
ejpam-6723	227	1	1	CARDINAL
ejpam-6723	227	2	bernard de saedeleer	PERSON
ejpam-6723	227	3	michel crucifix	PERSON
ejpam-6723	227	4	sebastian wieczorek	PERSON
ejpam-6723	229	1	2013	DATE
ejpam-6723	230	1	2	CARDINAL
ejpam-6723	230	2	peter ditlevsen	PERSON
ejpam-6723	230	3	peter ashwin	PERSON
ejpam-6723	232	1	1–13,	DATE
ejpam-6723	232	2	2018	DATE
ejpam-6723	233	1	3	CARDINAL
ejpam-6723	235	1	trans	PERSON
ejpam-6723	235	2	r. soc	PERSON
ejpam-6723	236	1	370:1140–1165, 2012	DATE
ejpam-6723	237	1	4	CARDINAL
ejpam-6723	237	2	balth van der pol.	PERSON
ejpam-6723	239	1	london	GPE
ejpam-6723	239	2	edinburgh	GPE
ejpam-6723	239	3	dublin philosophical magazine	ORG
ejpam-6723	239	4	journal of science	ORG
ejpam-6723	239	5	2(11):978–992, 1926	DATE
ejpam-6723	240	1	5	CARDINAL
ejpam-6723	240	2	balth van der pol	PERSON
ejpam-6723	240	3	jan van der mark	PERSON
ejpam-6723	242	1	120(3019):363–364, 1927	DATE
ejpam-6723	243	1	6	CARDINAL
ejpam-6723	243	2	nikolay kyurkchiev	PERSON
ejpam-6723	243	3	tsvetelin zaevski	PERSON
ejpam-6723	243	4	maria vasileva	PERSON
ejpam-6723	243	5	vesselin kyurkchiev	PERSON
ejpam-6723	243	6	anton iliev	PERSON
ejpam-6723	243	7	asen rahnev	PERSON
ejpam-6723	244	1	van der pol oscillators:	PERSON
ejpam-6723	244	2	melnikov	PERSON
ejpam-6723	245	1	2025	DATE
ejpam-6723	246	1	7	CARDINAL
ejpam-6723	246	2	maciej walczak	ORG
ejpam-6723	247	1	1d	CARDINAL
ejpam-6723	247	2	2d	DATE
ejpam-6723	247	3	3d	CARDINAL
ejpam-6723	248	1	26(9	CARDINAL
ejpam-6723	248	2	2024	DATE
ejpam-6723	249	1	8	CARDINAL
ejpam-6723	249	2	o. cornejo-pérez	PERSON
ejpam-6723	249	3	j. negro	PERSON
ejpam-6723	250	1	van der pol	PERSON
ejpam-6723	251	1	476:134675	CARDINAL
ejpam-6723	251	2	2025	DATE
ejpam-6723	252	1	9	CARDINAL
ejpam-6723	252	2	john guckenheimer	PERSON
ejpam-6723	252	3	kathleen hoffman	PERSON
ejpam-6723	252	4	warren weckesser	PERSON
ejpam-6723	253	1	van der pol	PERSON
ejpam-6723	254	1	j. applied	PERSON
ejpam-6723	254	2	2(1):1–35, 2003	DATE
ejpam-6723	256	1	j. pure	PERSON
ejpam-6723	256	2	18	CARDINAL
ejpam-6723	256	3	4	CARDINAL
ejpam-6723	256	4	2025	CARDINAL
ejpam-6723	256	5	6723 18	DATE
ejpam-6723	256	6	20	CARDINAL
ejpam-6723	256	7	10	CARDINAL
ejpam-6723	256	8	p. ashwin	PERSON
ejpam-6723	256	9	c. d. camp	PERSON
ejpam-6723	256	10	a. s. von der heydt	PERSON
ejpam-6723	258	1	3(1):dzy002	CARDINAL
ejpam-6723	258	2	2018	DATE
ejpam-6723	259	1	11	CARDINAL
ejpam-6723	259	2	c. edwards	PERSON
ejpam-6723	259	3	j. guckenheimer	PERSON
ejpam-6723	259	4	s. guharay	PERSON
ejpam-6723	259	5	k. hoffman	PERSON
ejpam-6723	259	6	j. hubbard	PERSON
ejpam-6723	259	7	r. oliva	PERSON
ejpam-6723	259	8	w. weckesser	PERSON
ejpam-6723	260	1	van der pol equation ii	PERSON
ejpam-6723	261	1	siam journal	ORG
ejpam-6723	261	2	2(4):570–608, 2003	DATE
ejpam-6723	262	1	12	CARDINAL
ejpam-6723	262	2	g. m. moatimid	PERSON
ejpam-6723	262	3	t. s. amer	PERSON
ejpam-6723	263	1	6	CARDINAL
ejpam-6723	264	1	13:11942	DATE
ejpam-6723	264	2	2023	CARDINAL
ejpam-6723	265	1	13	CARDINAL
ejpam-6723	265	2	m. a. elfouly	PERSON
ejpam-6723	265	3	m. a.	PERSON
ejpam-6723	266	1	van der pol model	PERSON
ejpam-6723	266	2	two	CARDINAL
ejpam-6723	267	1	2022	CARDINAL
ejpam-6723	268	1	14	CARDINAL
ejpam-6723	268	2	ibrahim alraddadi	PERSON
ejpam-6723	269	1	first	ORDINAL
ejpam-6723	270	1	https://doi.org/10.5281/zenodo.17081498	PERSON
ejpam-6723	270	2	sep 2025	DATE
ejpam-6723	271	1	10.5281	CARDINAL
ejpam-6723	272	1	15	CARDINAL
ejpam-6723	273	1	van der pol	PERSON
ejpam-6723	274	1	european journal	ORG
ejpam-6723	274	2	18(1):5787	CARDINAL
ejpam-6723	274	3	2025	DATE
ejpam-6723	275	1	16	CARDINAL
ejpam-6723	275	2	peter d ditlevsen	PERSON
ejpam-6723	277	1	53(5):3023	CARDINAL
ejpam-6723	277	2	3038	CARDINAL
ejpam-6723	277	3	2019	DATE
ejpam-6723	278	1	17	CARDINAL
ejpam-6723	278	2	peter ashwin	PERSON
ejpam-6723	278	3	charles david camp	PERSON
ejpam-6723	278	4	anna s von der heydt	PERSON
ejpam-6723	280	1	3(1	CARDINAL
ejpam-6723	280	2	2018	DATE
ejpam-6723	281	1	18	CARDINAL
ejpam-6723	281	2	peter ditlevsen	PERSON
ejpam-6723	281	3	peter ashwin	PERSON
ejpam-6723	283	1	21	CARDINAL
ejpam-6723	283	2	2019	DATE
ejpam-6723	284	1	19	CARDINAL
ejpam-6723	284	2	stephen lynch	PERSON
ejpam-6723	286	1	2014	DATE
ejpam-6723	287	1	van der pol-duffing	PERSON
ejpam-6723	288	1	1	CARDINAL
ejpam-6723	290	1	j. pure	PERSON
ejpam-6723	290	2	18	CARDINAL
ejpam-6723	290	3	4	CARDINAL
ejpam-6723	290	4	2025	CARDINAL
ejpam-6723	290	5	6723 19	DATE
ejpam-6723	290	6	20	CARDINAL
ejpam-6723	290	7	1	CARDINAL
ejpam-6723	290	8	van der pol-duffing	PERSON
ejpam-6723	291	1	3	CARDINAL
ejpam-6723	291	2	2	CARDINAL
ejpam-6723	291	3	0	CARDINAL
ejpam-6723	291	4	1	CARDINAL
ejpam-6723	291	5	11.11	CARDINAL
ejpam-6723	291	6	0	CARDINAL
ejpam-6723	291	7	1.2	CARDINAL
ejpam-6723	291	8	0.1	CARDINAL
ejpam-6723	291	9	3.5	CARDINAL
ejpam-6723	292	1	52.0 τ	QUANTITY
ejpam-6723	292	2	1.0 ω	CARDINAL
ejpam-6723	292	3	0.5	CARDINAL
ejpam-6723	292	4	5.0	CARDINAL
ejpam-6723	294	1	100	CARDINAL
ejpam-6723	294	2	kyr	ORG
ejpam-6723	294	3	100	CARDINAL
ejpam-6723	294	4	kyr	ORG
ejpam-6723	294	5	41	CARDINAL
ejpam-6723	294	6	kyr	ORG
ejpam-6723	294	7	23	CARDINAL
ejpam-6723	294	8	kyr	ORG
ejpam-6723	296	1	j. pure	PERSON
ejpam-6723	296	2	18	CARDINAL
ejpam-6723	296	3	4	CARDINAL
ejpam-6723	296	4	2025	CARDINAL
ejpam-6723	296	5	6723 20	DATE
ejpam-6723	296	6	20	CARDINAL
ejpam-6723	296	7	first	ORDINAL
ejpam-6723	296	8	first	ORDINAL
ejpam-6723	296	9	19	CARDINAL
ejpam-6723	298	1	±1	PERSON
ejpam-6723	300	1	−1	DATE
ejpam-6723	300	2	1	CARDINAL
ejpam-6723	304	1	7	CARDINAL
ejpam-6723	305	1	100	CARDINAL