E. A. Pereira Júnior, J. E. Honório Sampaio, and R. Brito Gomes, “ Covid-19 and its propagation dynamics in Ceará (Brazil) urban network”, Atelie Geogr., vol. 14, no. 3, pp. 35–56, Dec. 2020, doi: 10.5216/ag.v14i3.66373.