@book{31640,
	author = {Idelberger, Klaus.},
	title = {The world of footbridges :},
	publisher = {Ernst & Sohn,},
	year = {c2011.},
	address = {Berlin :},
	edition = {1st ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy1316/2011294354-b.html}
}