@book{71089,
	author = {Richmond, Leigh, and Schoenherr, John,},
	title = {Prologue to an Analogue},
	publisher = {Project Gutenberg,},
	year = {2009},
	series = {Produced from Analog Science Fact & Fiction June 1961.},
	address = {Salt Lake City, UT :},
	note = {Release date is 2009-10-13},
	url = {https://www.gutenberg.org/ebooks/30242}
}