@book{90735,
	author = {Gunn, James E., and Ashman, William},
	title = {The Gravity Business},
	publisher = {Project Gutenberg,},
	year = {2015},
	series = {Produced from Galaxy January 1956},
	address = {Salt Lake City, UT :},
	note = {Release date is 2015-09-06},
	url = {https://www.gutenberg.org/ebooks/49897}
}