C. Lu, W. Chen, Q. Zuo, G. Zhu, Y. Zhang, and Z. Liu, “Review of Combustion Performance Improvement and Nitrogen-Containing Pollutant Control in the Pure Hydrogen Internal Combustion Engine”, IJAMM, vol. 1, no. 1, p. 7, Dec. 2022. doi: 10.53941/ijamm0101007.