SANTANA-ARANDA, M. A. In memoriam. Orlando Zelaya-Angel’s contributions in Superficies y Vacío. Superficies y Vacío, [S. l.], v. 34, 2021. DOI: 10.47566/2021_syv34_2-211123. Disponível em: https://superficiesyvacio.smctsm.org.mx/index.php/SyV/article/view/2021_syv34_2-211123. Acesso em: 19 jan. 2022.