“Coupling Coefficients of Different Disk Microresonators With Whispering Gallery Modes”. Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia, no. 68 (March 30, 2017): 19–26. Accessed April 4, 2025. https://radap.kpi.ua/radiotechnique/article/view/1383.