%0 Journal Article %A S. V. Pakhomov %T Approximability of operators in constructive metric spaces %J Zapiski Nauchnykh Seminarov POMI %D 1976 %P 171-182 %V 60 %U http://geodesic.mathdoc.fr/item/ZNSL_1976_60_a11/ %G ru %F ZNSL_1976_60_a11