Degtyarev, A. V., DubininМ. М., and V. A. Maslov. “Spatial–phase Dynamics of Radially Polarized Terahertz Vortex Beams”. Visnyk of V.N. Karazin Kharkiv National University, Series “Radio Physics and Electronics”, no. 43, Dec. 2025, pp. 45-54, doi:10.26565/2311-0872-2025-43-04.