Iqbal Al-Banna Ismail, Muhammad, Sukono ., Abdul Talib BIN Bon, Yuyun Hidayat, Eman Lesmana, and Sudradjat Supian. 2018. “Geometric-Gamma Collective Modified Value-at-Risk Model in Life Insurance Risk”. International Journal of Engineering & Technology 7 (3.20): 372-76. https://doi.org/10.14419/ijet.v7i3.20.20574.