Zhan, Zhaoxi, Chen Wang, Jeffrey Boon Hui Yap, Shaharudin Samsudin, and Hamzah Abdul-Rahman. “EARNED VALUE ANALYSIS, IMPLEMENTATION BARRIERS, AND MATURITY LEVEL IN OIL &Amp; GAS PRODUCTION”. The South African Journal of Industrial Engineering 30, no. 4 (December 12, 2019): 44–59. Accessed April 27, 2024. http://sajie.journals.ac.za/pub/article/view/2030.