@article{ZNSL_1989_179_a16,
     author = {N. V. Sivitskaya and V. B. Philippov},
     title = {On whispering gallery mode propagation in a medium containing vertical interface boundary},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {147--151},
     publisher = {mathdoc},
     volume = {179},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1989_179_a16/}
}