@article{ZNSL_1985_148_a6,
     author = {O. V. Graunov and V. B. Filippov},
     title = {Directional diagram of whispering gallery modes for {\cyrs}{\cyro}{\cyrp}{\cyrs}{\cyra}{\cyrt}{\cyre} reflector},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {61--67},
     publisher = {mathdoc},
     volume = {148},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1985_148_a6/}
}