Analysis for the elaboration of a sustainability model in urban logistics and mobility of the city of Tulcán. Business Vision, [S. l.], n. 9, p. 173–181, 2019. DOI: 10.32645/13906852.879. Disponível em: https://revistasdigitales.upec.edu.ec/index.php/visionempresarial/article/view/879. Acesso em: 21 oct. 2026.