Desmond Eseoghene Ighravwe และผู้แต่งคนอื่นๆ. (2017) A surrogate model for optimal maintenance workforce cost determination in a process industry. <i>Engineering and Applied Science Research</i>, <i>44</i>(4), 202-207.Desmond Eseoghene Ighravwe และผู้แต่งคนอื่นๆ. "A surrogate model for optimal maintenance workforce cost determination in a process industry". Engineering and Applied Science Research 44 (2017):202-207.Desmond Eseoghene Ighravwe และผู้แต่งคนอื่นๆ. A surrogate model for optimal maintenance workforce cost determination in a process industry. Faculty of Engineering, Khon Kaen University:ม.ป.ท. 2017.