Martínez-Zazueta, Iván, and Francisco Osorno-Covarrubias. “Spatio-Temporal Viewer on the Incidence of Cases of Covid-19 in the Mexico-United States Cross-Border Strip”. Terra Digitalis 4, no. 2 (October 31, 2020): 1-12. Accessed May 2, 2024. https://terradigitalis.igg.unam.mx/html/ojs3/index.php/terra_digitalis/article/view/80.