Ighravwe, Desmond Eseoghene, Sunday Ayoola Oke, and Kazeem Adekunle Adebiyi. 2018. “Selection of an Optimal Neural Network Architecture for Maintenance Workforce Size Prediction Using Grey Relational Analysis”. Engineering and Applied Science Research 45 (1):1-7. https://ph01.tci-thaijo.org/index.php/easr/article/view/55162.