Dhiman, Cherry, Mohd. Shahid Khan, and M.N. Reddy. “Phase-Shift Cavity Ring-down Technique for Detection of NO2 in PPM Concentration”. Defence Science Journal 64, no. 5 (June 10, 2014): 426-430. Accessed April 19, 2024. https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/5030.