@book{48056,
	author = {Rodrigue, Jean-Paul and Comtois, Claude},
	title = {The geography of transport systems /},
	publisher = {Routledge,},
	year = {2009},
	address = {London ;},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/toc/ecip0828/2008040189.html}
}