%0 Journal Article %A Philippe G. Ciarlet %A Patrick Ciarlet %A Giuseppe Geymonat %A Françoise Krasucki %T Characterization of the kernel of the operator CURL CURL %J Comptes Rendus. Mathématique %D 2007 %P 305-308 %V 344 %N 5 %I Elsevier %R 10.1016/j.crma.2007.01.001 %G en %F CRMATH_2007__344_5_305_0