Degtyarev, A. V., M. M. Dubinin, V. A. Maslov, K. I. Muntean, and O. O. Svystunov. “Propagation of Vortex Laser Beams of a Metal Resonator”. Visnyk of V.N. Karazin Kharkiv National University, Series “Radio Physics and Electronics”, no. 40, June 2024, pp. 57-67, doi:10.26565/2311-0872-2024-40-05.