Kumar M, Geetha M, Kumar MV. Design of Magnetic Focusing system for a Compact Ka band Helix TWT. Def. Sc. J. [Internet]. 2021 May 17 [cited 2025 Jun. 15];71(03):329-31. Available from: https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/16810