Левандовський, В.Г. “Engineering of Lightguide With Enlarged Effective Area for Telecommunication Lines”. Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia0, no. 44 (October 11, 2012): 48-53. Accessed May 25, 2024. https://radap.kpi.ua/radiotechnique/article/view/30.