@article{SM_2014_205_7_a2,
     author = {S. A. Nazarov},
     title = {Umov-Mandelshtam radiation conditions in elastic periodic waveguides},
     journal = {Sbornik. Mathematics},
     pages = {953--982},
     publisher = {mathdoc},
     volume = {205},
     number = {7},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2014_205_7_a2/}
}