Kveiborg, Ole, Lise Bjørg Pedersen, y Lykke Magelund. «Den samfundsøkonomiske værdi Af Kollektiv Transport». Proceedings from the Annual Transport Conference at Aalborg University 24, no. 1 (diciembre 31, 2017). Accedido julio 22, 2024. https://journals.aau.dk/index.php/td/article/view/6024.