Assis, Janaina Maria Oliveira de, et al. “Analysis of Climate Indices and Impacts on the Rainfall Regime in the Sub-Medium Stretch of the São Francisco River Basin, Brazil”. Revista Principia, vol. 59, no. 4, Dec. 2022, pp. 1475-86, https://doi.org/10.18265/1517-0306a2021id5570.