D. Devandran, et al. “INVESTIGATION ON EFFECT OF SOME OPERATING CONDITIONS ON FLOW AND HEAT TRANSFER OF SUPERCRITICAL CO2 IN HELICAL COILED TUBES VIA MULTILEVEL FACTORIAL METHODOLOGY”. Malaysian Journal of Industrial Technology , vol. 2, no. 2, Dec. 2017, pp. 23-30, https://ejournal.unikl.edu.my/index.php/mjit/article/view/539.