Grosjean C. On the frequency shift resulting from the perturbation of an electromagnetic TM wave-mode by a small metallic cylinder in a resonant cavity. Part 1: Detailed theoretical treatment. REV TEC FAC ING UNIV [Internet]. 1 [cited 2024May24];18(1). Available from: https://www.produccioncientificaluz.org/index.php/tecnica/article/view/5466