Xu, Changfei, Ruisheng Liu, Feibo Wang, Jinying Wu, Rui Wang, and Zhuo Zhang. “Hydrogen-Doped Natural Gas and Its Transportation Technology”. International Journal of Automotive Manufacturing and Materials 4, no. 1 (February 28, 2025): 3. Accessed May 25, 2025. https://ojs.sciltp.com/journals/ijamm/article/view/805.