V. d'Alessandro, N. . Balasco, P. Ferrara, and L. Vitagliano, “The temporal correlation between positive testing and death in Italy: from the first phase to the later evolution of the COVID-19 pandemic: Time evolution of COVID-19 weekly lethality rate”, Acta Biomed, vol. 92, no. 6, p. e2021395, Jan. 2022, doi: 10.23750/abm.v92i6.12030.