Kuzmichev, I., B. I. Muzychishin, and A. Y. Popkov. “Summation of Powers in Open Resonator With Slotted Coupling Elements”. Advanced Electromagnetics 10, no. 3 (October 14, 2021): 7–13. Accessed November 9, 2025. https://www.aemjournal.org/index.php/AEM/article/view/1721.