%0 Journal Article %A Sergei A. Nazarov %A Jari Taskinen %T Elastic and piezoelectric waveguides may have infinite number of gaps in their spectra %J Comptes Rendus. Mécanique %D 2016 %P 190-194 %V 344 %N 3 %I Elsevier %R 10.1016/j.crme.2015.12.004 %G en %F CRMECA_2016__344_3_190_0