Kronbak, Jacob. «The Use of GIS for Visualisation of Competition Between Truck and RORO Traffic: (Brugen Af GIS Til Visualisering Af Konkurrenceflader Mellem Lastbil Og RORO Trafik)». Proceedings from the Annual Transport Conference at Aalborg University 12, no. 1 (diciembre 31, 2005). Accedido julio 22, 2024. https://journals.aau.dk/index.php/td/article/view/5042.