@book{121784,
	author = {Jammer, Max.},
	title = {Concepts of space :},
	publisher = {Harper Torchbooks},
	year = {1960},
	address = {New York :},
	edition = {3rd enl. ed.},
	url = {http://www.loc.gov/catdir/description/dover032/93008667.html}
}