GUPTA, SUKLA DUTTA. “MEASUREMENT AND ANALYSIS OF RADIO REFRACTIVE INDEX OVER KOLKATA WITH RESPECT TO ITS SEASONAL AND DIURNAL CHARACTERISTICS”. MAUSAM 59, no. 3 (July 1, 2008): 357–360. Accessed December 2, 2023. https://mausamjournal.imd.gov.in/index.php/MAUSAM/article/view/1267.