@book{55080,
	author = {McMahon, James,},
	title = {Hyperbolic Functions},
	publisher = {Project Gutenberg,},
	year = {2004},
	address = {Salt Lake City, UT :},
	note = {Release date is 2004-10-10},
	url = {https://www.gutenberg.org/ebooks/13692}
}