FRIIS, G.; DZUBUR, A. The Journey to MaaS. Proceedings from the Annual Transport Conference at Aalborg University, [S. l.], v. 25, n. 1, 2018. DOI: 10.5278/ojs.td.v1i1.6043. Disponível em: https://journals.aau.dk/index.php/td/article/view/6043. Acesso em: 6 may. 2024.