%0 Journal Article %A A. V. Bitsadze %T On a system of linear partial differential equations %J Doklady Akademii Nauk %D 1972 %P 1031-1033 %V 204 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1972_204_5_a0/ %G ru %F DAN_1972_204_5_a0