List of Articles S A Najamudin Article 1 - Steam System Optimization at Palm Oil Mill: Case Study in Sabah, Malaysia 20.1001.1.22519904.2022.15.2.7.7 10.22094/joie.2022.1951662.1935 M D Ibrahim S A Najamudin S S Lam Journal of Optimization in Industrial Engineering , Issue 33 , Year , Autumn 2022