@book{7645,
	author = {Arfken, George B.  and Harris, Frank E., },
	title = {Mathematical methods for physicists :},
	publisher = {Elsevier, },
	year = {c2013},
	address = {Amsterdam ; Boston :},
	edition = {7 ed.},
	url = {https://www.cicy.mx/sitios/sib/doctoelectronico/8352.pdf}
}