DAHAL, K. Policy Issues for Sustainable Transportation. Tribhuvan University Journal, [S. l.], v. 25, n. 1, p. 33–44, 2010. DOI: 10.3126/tuj.v25i1.3745. Disponível em: https://www.nepjol.info/index.php/TUJ/article/view/3745. Acesso em: 23 may. 2024.