VYSKUPAITIS, Andrius. Efficiency estimation of transport companies’ activity. Transport, [S. l.], v. 18, n. 2, p. 61–65, 2003. DOI: 10.3846/16483840.2003.10414067. Disponível em: https://journals.vilniustech.lt/index.php/Transport/article/view/8598. Acesso em: 16 may. 2025.