Duarte, Rigoberto Fimia, Ricardo Osés Rodríguez, Pedro Y. de la Fé Rodríguez, Claudia Osés Llanes, María P. Zambrano Gavilanes, Luis E. Jerez Puebla, and Frank M. Wilford González. “COVID-19: Fitting a ROR Prediction Model for Cuba As Vaccination Advance”. European Journal of Applied Sciences 9, no. 5 (September 18, 2021): 56–65. Accessed May 30, 2026. https://scholarpublishing.org/journals/index.php/EJAS/article/view/8038.