“Coupling Coefficients of the Spherical Dielectric Microresonators With Whispering Gallery Modes”. 2015. Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia, no. 62 (September): 49-61. https://doi.org/10.20535/RADAP.2015.62.49-61.