Трубаров, І. “Multi-Element Antennas Based on Cylindrical Dielectric Resonators and Microstrip Lines in Case of Their Orthogonal Mutual Orientation”. Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia, no. 47, Dec. 2011, pp. 98-105, doi:10.20535/RADAP.2011.47.98-105.