@article{DAN_1982_264_5_a28,
     author = {Yu. V. Shestopalov},
     title = {Sufficient conditions for the existence of a discrete spectrum of natural waves of slot transmission lines},
     journal = {Doklady Akademii Nauk},
     pages = {1131--1135},
     publisher = {mathdoc},
     volume = {264},
     number = {5},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1982_264_5_a28/}
}