Tariq M. Salman, et al. “Design and Fabrication of a Smart Monitoring System for Liquefied Petroleum Gas-Operated Cars Based on Global System Mobile”. International Journal of Online and Biomedical Engineering (iJOE), vol. 19, no. 11, Aug. 2023, pp. pp. 96–111, doi:10.3991/ijoe.v19i11.41937.