id	domain	url
ajote-5927	doi.org	https://doi.org/10.4236/oalib.1106176
ajote-5927	doi.org	https://doi.org/10.4236/ojm.2018.85016
ajote-5927	doi.org	https://doi.org/10.4236/oalib.1106176
ajote-5927	www.ipedr.com	http://www.ipedr.com
ajote-5927	www.maa.org	https://www.maa.org/sites/default/files/pdf/upload_library/22/ford/olgataussky.pdf
ajote-5927	digitalcommons.utep.edu	https://digitalcommons.utep.edu/open_etd/1175
ajote-5927	www.ipedr.com	http://www.ipedr.com
ajote-5927	www.maa.org	https://www.maa.org/sites/default/files/pdf/upload_library/22/ford/olgataussky.pdf