Трубін, О.О. “High-Q Spherical Dielectric Resonator Oscillations in the Optical and Infrared Ranges”. Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia0, no. 33 (September 25, 2006): 83-91. Accessed May 4, 2024. https://radap.kpi.ua/radiotechnique/article/view/455.