Trubin, A. A. “ Rotations of Cylindrical Dielectric Resonators in a Rectangular Waveguide”. Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia, no. 86, Sept. 2021, pp. 22-28, doi:10.20535/RADAP.2021.86.22-28.