%0 Journal Article %A Gondran, Michel %A Saade, Rita Hoblos %T Complex calculus of variations %J Kybernetika %D 2003 %P [249] %V 39 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_2003__39_2_a12/ %G en %F KYB_2003__39_2_a12