id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ejpam-1175	Michael Rassias, John	The Exterior Tricomi and Frankl Problems for Quaterelliptic-Quaterhyperbolic Equations with Eight Parabolic Lines	2011	23	.pdf	application/pdf	8988	434	81	(8) It is clear that ∫∫ Ḡ1 Γu2d xd y = − ∫∫ Ḡ1 � 2r + x rx + (y − 1)ry � u2d xd y = 0. (9) It is clear that ∫∫ Ḡ2 Γu2d xd y = − ∫∫ Ḡ2 (r + x rx)u 2d xd y = 0.	cache/ejpam-1175.pdf	txt/ejpam-1175.txt