%0 Journal Article %A Sergey A. Nazarov %A Keijo Ruotsalainen %A Jari Taskinen %T Gaps in the essential spectrum of infinite periodic necklace-shaped elastic waveguide %J Comptes Rendus. Mécanique %D 2009 %P 119-123 %V 337 %N 3 %I Elsevier %R 10.1016/j.crme.2009.03.014 %G en %F CRMECA_2009__337_3_119_0