Khandaker, Sayma, Md Mahmudul Hasan, Nurulain Shaipuzaman, Mohd Amir Shahlan Mohd Aspar, and Hadi Manap. 2025. “Development of DOAS System for Hazardous Methane Detection in the Near-Infrared Region ”. EMITTER International Journal of Engineering Technology 12 (2), 182-95. https://doi.org/10.24003/emitter.v12i2.890.