%0 Journal Article %A Carlo Cossu %T An optimality condition on the minimum energy threshold in subcritical instabilities %J Comptes Rendus. Mécanique %D 2005 %P 331-336 %V 333 %N 4 %I Elsevier %R 10.1016/j.crme.2005.02.002 %G en %F CRMECA_2005__333_4_331_0