@book{60127,
	author = {Veblen, Oswald, and Lennes, N. J.},
	title = {Introduction to Infinitesimal Analysis; Functions of One Real Variable},
	publisher = {Project Gutenberg,},
	year = {2006},
	address = {Salt Lake City, UT :},
	note = {Release date is 2006-03-07},
	url = {https://www.gutenberg.org/ebooks/18741}
}