@book{42803,
	author = {Fee, Greg},
	title = {Catalan's Constant [Ramanujan's Formula]},
	publisher = {Project Gutenberg,},
	year = {1996},
	address = {Salt Lake City, UT :},
	note = {Ramanujan's Formula},
	url = {https://www.gutenberg.org/ebooks/682}
}