Leetrakool, Athiratch, Teangtaum Sittichantasen, Asada Wannakayont, and Nikom Lonkunthos. “STUDY OF THE CAUSES OF PROBLEM AND THE NEEDS OF KNOWING THE REDUCED LIFE TIME OF BEARING”. Journal of MCU Nakhondhat 7, no. 11 (November 30, 2020): 34–46. Accessed December 7, 2022. https://so03.tci-thaijo.org/index.php/JMND/article/view/248263.