Global Navigation Satellite System based tolling:state-of-the-art Numrich, Julia Ruja, Sascha Voß, Stefan 2012 - Forschungsinformationssystem der UHH
Electronic Toll Collection Technologies for Road Pricing Furnes, Per Jarle Ruja, Sascha Voß, Stefan 2011 - Forschungsinformationssystem der UHH