Veza, I., M. F. M. Said, Z. A. Latiff, M. A. Abas, M. R. M. Perang, H. K. Ng, A. Sule, T.W.B. Riyadi, and N. Tamaldin. “Strategies to Form Homogeneous Mixture and Methods to Control Auto-Ignition of HCCI Engine”. International Journal of Automotive and Mechanical Engineering, vol. 18, no. 4, Dec. 2021, pp. 9253–9270, doi:10.15282/ijame.18.4.2021.09.0712.