SINGH, RANJIT. “THE 500 HPA SUB-TROPICAL ANTICYCLONE DURING APRIL AND MAY 1988 AND THE WEATHER OVER INDIA”. MAUSAM 44, no. 1 (January 1, 1993): 23–28. Accessed December 9, 2023. https://mausamjournal.imd.gov.in/index.php/MAUSAM/article/view/3742.