Shulga, S. M., O. V. Bagatska, VinnichenkoS. О., and A. O. Maslennikov. “Mode Decomposition of Fields into Solenoidal and Potential Components in a Closed Waveguide”. Visnyk of V.N. Karazin Kharkiv National University, Series “Radio Physics and Electronics”, no. 42, July 2025, pp. 7-14, doi:10.26565/2311-0872-2025-42-01.