HUGENBERG, Gerd. New Perspectives for the Development of Track-Bound Traffic. Promet - Traffic&Transportation, [S. l.], v. 13, n. 2-3, p. 135–137, 2012. Disponível em: https://traffic2.fpz.hr/index.php/PROMTT/article/view/1942. Acesso em: 27 aug. 2025.