@book{70630,
	author = {Eddington, Arthur Stanley, Sir,},
	title = {Space, Time and Gravitation: An Outline of the General Relativity Theory},
	publisher = {Project Gutenberg,},
	year = {2009},
	address = {Salt Lake City, UT :},
	note = {Release date is 2009-08-24},
	url = {https://www.gutenberg.org/ebooks/29782}
}