%0 Journal Article %A I. P. Kostenko %T The reflexivity of certain unions of semiordered spaces %J Doklady Akademii Nauk %D 1967 %P 774-777 %V 177 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1967_177_4_a6/ %G ru %F DAN_1967_177_4_a6