%0 Journal Article %A S. G. Ovsepyan %T Extension of continuous mappings and epireflectivity of the category of $H$-closed spaces %J Doklady Akademii Nauk %D 1980 %P 290-294 %V 255 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1980_255_2_a6/ %G ru %F DAN_1980_255_2_a6