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