Alwan Saleh, Fouad, Abdulrahman Shakir Mahmood, Mohammed Kadhim Allawi, and Ali Khalid Shaker Al-Sayyab. 2025. “The Effect of Hydrogen on Performance of Internal Combustion Engine Fueled by Compressed Natural Gas”. Journal of Engineering and Sustainable Development 29 (3): 338-43. https://doi.org/10.31272/jeasd.2689.