@book{23793,
	author = {Ross,Shepley L.},
	title = {Differential equations},
	publisher = {John Wiley & Sons Publisher},
	year = {2004},
	edition = {3th},
	url = {https://libgen.is/book/index.php?md5=3F1EE77C800D0EF97274FB86FE8150A4}
}