BUTKEVIČIUS, Jonas. The research into the development of passenger transport by land. Transport, [S. l.], v. 19, n. 5, p. 195–201, 2004. DOI: 10.3846/16484142.2004.9637976. Disponível em: https://journals.vilniustech.lt/index.php/Transport/article/view/8470. Acesso em: 16 may. 2025.