%0 Journal Article %A Michele Carriero %A Antonio Leaci %A Franco Tomarelli %T Necessary conditions for extremals of Blake & Zisserman functional %J Comptes Rendus. Mathématique %D 2002 %P 343-348 %V 334 %N 4 %I Elsevier %R 10.1016/S1631-073X(02)02231-8 %G en %F CRMATH_2002__334_4_343_0