OBED, Sami A.; MOHAMMED, Parzhin A.; KADIR, Dler H. The Estimation of (Covid-19) Cases in Kurdistan Region Using Nelson Aalen Estimator. Cihan University-Erbil Scientific Journal, [S. l.], v. 5, n. 2, p. 24–31, 2021. DOI: 10.24086/cuesj.v5n2y2021.pp24-31. Disponível em: https://journals.cihanuniversity.edu.iq/index.php/cuesj/article/view/448. Acesso em: 7 jun. 2026.