%0 Journal Article %A A. Yu. Levin %T Differential properties of Green's function in a manypoint boundary-value problem %J Doklady Akademii Nauk %D 1961 %P 1022-1025 %V 136 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_136_5_a4/ %G ru %F DAN_1961_136_5_a4