Salah Aldean Qassim Haidari, S., & Abd Al-Aziz Al-Talib, B. (2023). Robustifying Cox - Regression Model Estimation Using M - estimators with application to breast cancer patients. IRAQI JOURNAL OF STATISTICAL SCIENCES, 20(2), 166–174. https://doi.org/10.33899/iqjoss.2023.181221