Sharath L., Shivakumara N., Vinay Krishna H. V., Vinayak Venkatraman Hebbar, and Mr. Vivek Raj K. “Drought Monitoring and Assessment”. Journal of Power Electronics and Devices, vol. 4, no. 2, July 2019, pp. 13-16, http://matjournals.co.in/index.php/JOPED/article/view/6459.