S. Sulaimon, H. Nasution, A. A. Aziz, A.-H. Abdul-Rahman, and A. N. Darus, “Taguchi Method for Development of Mass Flow Rate Correlation using Hydrocarbon Refrigerant Mixture in Capillary Tube”, J. Eng. Technol. Sci., vol. 46, no. 2, pp. 141-151, Jul. 2014.