%0 Journal Article %A Bogoljub Stanković %T The Existence And The Unicity Of Solution Of A System Of Operator Differential Equations %J Publications de l'Institut Mathématique %D 1969 %P 85 %V _N_S_09 %N 23 %I mathdoc %U http://geodesic.mathdoc.fr/item/PIM_1969_N_S_09_23_a11/ %F PIM_1969_N_S_09_23_a11