%0 Journal Article %A S. A. Nazarov %T Umov-Mandelshtam radiation conditions in elastic periodic waveguides %J Sbornik. Mathematics %D 2014 %P 953-982 %V 205 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_2014_205_7_a2/ %G en %F SM_2014_205_7_a2