Ponpakdee, Suwanna, and Nipas Leenatham. 2020. “An Application of Monte Carlo Simulation Techniques to Spare Parts Managing Maintenance in Petroleum Industry”. Naresuan University Engineering Journal 15 (1). Phitsanulok, Thailand:66-80. https://ph01.tci-thaijo.org/index.php/nuej/article/view/237743.