TIETZE, Wolf; STEINMANN-TIETZE, Marie-Luise. Technical and Structural Innovations to European Transport in 21’1 Century. Promet - Traffic&Transportation, [S. l.], v. 11, n. 2-3, p. 41–55, 2012. Disponível em: https://traffic2.fpz.hr/index.php/PROMTT/article/view/2316. Acesso em: 27 aug. 2025.