Zaki Awang Chek, Mohd, Isma Liana Ismail, and Nur Faezah Jamal. 2018. “Optimising Contribution Rate for SOCSO’s Invalidity Pension Scheme: Actuarial Present Value (APV)”. International Journal of Engineering & Technology 7 (4.33): 83-92. https://doi.org/10.14419/ijet.v7i4.33.23491.