@article{AA_2011_23_1_a8,
     author = {K. F\"orster and T. Weidl},
     title = {Trapped modes in an elastic plate with a~hole},
     journal = {Algebra i analiz},
     pages = {255--288},
     publisher = {mathdoc},
     volume = {23},
     number = {1},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2011_23_1_a8/}
}