@article{TM_1988_179_a2,
     author = {M. Sh. Birman},
     title = {The {Maxwell} operator for a~periodic resonator with inward edges},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {23--35},
     publisher = {mathdoc},
     volume = {179},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1988_179_a2/}
}