Batista, Mateus Costa, et al. “Influence of Rainfall Variability on Bean Production (Phaseolus Vulgaris L.) in a Municipality of Brazilian Semiarid”. Journal of Environmental Analysis and Progress, vol. 3, nº 1, janeiro de 2018, p. 001-7, doi:10.24221/jeap.3.1.2018.1590.001-007.