00650naa#a2200193#i#450# EN\\bibl\3181 20240730212257.2 2308-8877 20140617b2014####ek#y0engy0150####ca RUS RU The calculation of the focusing device into elliptic ring of the uniform dielectric Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2014 4 с. Journal article local Lisitsyn V. Kamalova Nina Evsikova Natalya naukaru.ru