Assis, J., A. Menezes, W. de Souza, and M. do C. Sobral. “Methods to Analyze Spatio-Temporal Rainfall Variability: Application to the Pajeú River Basin, Pernambuco, Brazil”. Brazilian Journal of Environmental Sciences (Online), Vol. 56, no. 4, Oct. 2021, pp. 577-88, doi:10.5327/Z21769478866.