Bhatnagar, P. S., S. N. Agrawala, and M. D. Singh. “Tropospheric Scatter Propagation Measurements Beyond the Horizon in Arid Zone-A Note”. Defence Science Journal 35, no. 4 (January 24, 2014): 411–416. Accessed June 16, 2025. https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/6035.