Svane, Jakob, Michael Henriques, Jakob Kronbak, och Jens W. Brix. ”Det Samarbejdende Godstransportsystem”. Proceedings from the Annual Transport Conference at Aalborg University 15, no. 1 (december 31, 2008). åtkomstdatum juli 22, 2024. https://journals.aau.dk/index.php/td/article/view/5408.