@article{Barannik_2010 author = {A. A. Barannik and K. I. Torokhtyi and Nikolay T. Cherpak}, title = {QUASI-OPTICAL ANNULAR SAPPHIRE RESONATOR WITH INTERNAL CYLINDRICAL CONDUCTOR}, journal = {Telecommunications and Radio Engineering}, issn = {0040-2508}, year = {2010}, volume = {69}, number = {14}, pages = {1221--1228} }