%0 Journal Article %A Schmidt, Werner H. %T Necessary optimality conditions for special integral processes %J Acta Universitatis Lodziensis. Folia Mathematica %D 1991 %V 04 %I mathdoc %U http://geodesic.mathdoc.fr/item/AULFM_1991_04_a18/ %G en %F AULFM_1991_04_a18