TOMANEK, Robert. Evaluation of the Effectiveness of Sustainable Mobility in Metropolitan Areas by Means of Free Fare Public Transport. Regional Barometer. Analyses & Prognoses, [S. l.], v. 15, n. 4, p. 61–67, 2018. DOI: 10.56583/br.404. Disponível em: https://czaz.akademiazamojska.edu.pl/index.php/br/article/view/404. Acesso em: 6 dec. 2025.