Babar, M., M. A. Bustam, A. Ali, and A. S. Maulud. “Identification and Quantification of CO2 Solidification in Cryogenic CO2 Capture from Natural Gas”. International Journal of Automotive and Mechanical Engineering, Vol. 15, no. 2, June 2018, p. 5367, https://journal.ump.edu.my/ijame/article/view/24.