%0 Journal Article %A Quoc-Son Nguyen %T Variational principles in the theory of gradient plasticity %J Comptes Rendus. Mécanique %D 2011 %P 743-750 %V 339 %N 12 %I Elsevier %R 10.1016/j.crme.2011.08.002 %G en %F CRMECA_2011__339_12_743_0