JASWAL , A. K. “Sunshine Duration Climatology and Trends in Association With Other Climatic Factors over India for 1970-2006”. MAUSAM 60, no. 4 (October 1, 2009): 437–454. Accessed January 19, 2025. https://mausamjournal.imd.gov.in/index.php/MAUSAM/article/view/1113.