AL-TIMIMI, Yaseen K. Drought assessment in Iraq using analysis of Standardized precipitation index (SPI). Iraqi Journal of Physics, Baghdad, Iraq., v. 12, n. 23, p. 36–43, 2019. DOI: 10.30723/ijp.v12i23.336. Disponível em: https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/336. Acesso em: 13 mar. 2025.