Los efectos del covid-19 en el comercio exterior Boliviano durante los años 2019-2021. UTEPSA INVESTIGA, [S. l.], v. 6, n. 1, p. 55–72, 2022. Disponível em: https://investiga.utepsa.edu/index.php/revista/article/view/74.. Acesso em: 28 aug. 2025.