Rafif Deopra Bowen (2023) “Utilization of Layered FBG (Fiber Brag Grating) as a Methane and Carbon Dioxide Gas Sensor”, Journal of Science, Learning Process and Instructional Research, 1(1), pp. 15–22. Available at: https://journal.riau-edutech.com/index.php/joslepi/article/view/5 (Accessed: 18 March 2025).