The bilateral agreement between Ecuador and Peru: an analysis from the perspective of commercial and tourism development in the period 2016-2020. Revista Universidad de Guayaquil, [S. l.], v. 134, n. 1, p. 34–46, 2022. DOI: 10.53591/rug.v134i1.1420. Disponível em: https://revistas.ug.edu.ec/index.php/rug/article/view/146. Acesso em: 5 dec. 2025.