Berg, Christin, Stian Brosvik Bayer, y Gunnar Thesen. «Hovedresultater Fra ISA-forsøket Ungtrafikk». Proceedings from the Annual Transport Conference at Aalborg University 15, no. 1 (diciembre 31, 2008). Accedido julio 22, 2024. https://journals.aau.dk/index.php/td/article/view/5392.