@book{120855,
	author = {Russell, Bertrand,},
	title = {Introduction to mathematical philosophy /},
	publisher = {Routledge,},
	year = {1993.},
	address = {London ;},
	note = {Originally published: London : Allen & Unwin, 1919.},
	url = {http://www.loc.gov/catdir/enhancements/fy0648/93012357-d.html}
}