@book{4309,
	author = {Ponnuswamy, S.},
	title = {Railway Transportation },
	publisher = {Alpha Science Intl Ltd,},
	year = {2012.},
	address = {[S.l.] :},
	edition = {1st ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/1842656856/chopaconline-20}
}