Raha, Krishnendu, and K.P. Ray. “Designing a Cavity Backed Microstrip Antenna With Enhanced Isolation for the Development of a Continuous Wave Ground Penetrating Radar”. Defence Science Journal 71, no. 4 (July 1, 2021): 524-534. Accessed October 18, 2021. https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/15947.