HAJDUK, Sławomira. Efficiency evaluation of urban transport using the DEA method. Equilibrium. Quarterly Journal of Economics and Economic Policy, [S. l.], v. 13, n. 1, p. 141–157, 2018. DOI: 10.24136/eq.2018.008. Disponível em: https://journals.economic-research.pl/eq/article/view/729. Acesso em: 1 mar. 2024.