@article{ZNSL_1970_17_a9,
     author = {T. F. Pankratova},
     title = {On the eigen-oscillations of the three-dimensional multilayered resonator},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {184--208},
     year = {1970},
     volume = {17},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1970_17_a9/}
}