Bilynskiy, Yosyp, Bogdan Knysh, and Oleksandr Pavluk. “INFRARED TWO-WAVE GAS CONCENTRATION CONTROL SENSOR”. Scientific Works of Vinnytsia National Technical University, no. 3 (November 30, 2015). Accessed April 18, 2025. https://works.vntu.edu.ua/index.php/works/article/view/303.