Zully Katherine Perez C´ardenas, R. G. Rodr´ıguez Giraldo, and A. R. Go´mez Plata, “Generalized SIRD epidemiological model for Covid-19 in Tolima-Colombia”, J Popl Ther Clin Pharmacol, vol. 30, no. 11, pp. 1–7, May 2023, doi: 10.47750/jptcp.2023.30.11.001.