ANSARI , M. I., and RANJU MADAN. “MEASUREMENT AND ANALYSIS OF RADIO REFRACTIVE INDEX OVER DELHI WITH RESPECT TO ITS DIURNAL AND SEASONAL CHARACTERISTICS”. MAUSAM 61, no. 2 (April 1, 2010): 239–242. Accessed July 17, 2024. https://mausamjournal.imd.gov.in/index.php/MAUSAM/article/view/822.