Gogoi, Mukunda M, Jai Prakash Chaubey, V Sreekanth, Sobhan Kumar Kompalli, S Suresh Babu, Tushar P Prabhu, and K Krishna Moorthy. “Columnar Aerosol Extinction Characteristics: Measurements from a Free-Tropospheric Observatory in Western-Himalayas”. Journal of the Institute of Engineering 8, no. 3 (February 26, 2012): 52–57. Accessed August 6, 2021. https://www.nepjol.info/index.php/JIE/article/view/5931.