ZALAR, Dušan; UŠPALYTĖ-VITKŪNIENĖ, Rasa; REBOLJ, Danijel; LEP, Marjan. A methodological framework for measuring the level of convenience of transport ticketing systems. Transport, [S. l.], v. 33, n. 4, p. 1005–1016, 2018. DOI: 10.3846/16484142.2017.1300783. Disponível em: https://journals.vilniustech.lt/index.php/Transport/article/view/167. Acesso em: 2 jun. 2025.