M. A. Mohd Zakaria, R. I. Raja Abdullah, M. S. Kasim, and M. H. Ibrahim, “Enhancing the Productivity of Wire Electrical Discharge Machining Toward Sustainable Production by using Artificial Neural Network Modelling”, EMITTER Int’l J. of Engin. Technol., vol. 7, no. 1, pp. 261-274, Jun. 2019.