@book{352325,
	author = {Sorensen, Paul;Ecola, Liisa;Wachs, Martin},
	title = {Mileage-Based User Fees for Transportation Funding},
	publisher = {RAND Corporation},
	year = {2012},
	url = {http://www.jstor.org/stable/10.7249/j.ctt5hhtj1}
}