RYAN, J. .; WRETSTRAND, A. . Challenges and opportunities for cohesive ticketing and traffic information systems in the Greater Copenhagen region : udvidet resumé. Proceedings from the Annual Transport Conference at Aalborg University, [S. l.], v. 27, n. 1, 2020. DOI: 10.5278/ojs.td.v27i1.6179. Disponível em: https://journals.aau.dk/index.php/td/article/view/6179. Acesso em: 29 apr. 2024.