@article{AA_2019_31_5_a4,
     author = {S. A. Nazarov},
     title = {Trapping of a wave in a curved cylindrical acoustic waveguide with constant cross-section},
     journal = {Algebra i analiz},
     pages = {154--183},
     year = {2019},
     volume = {31},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2019_31_5_a4/}
}