%0 Journal Article %A È. A. Golubov %T The finitary approximability of separable naturally linearly ordered commutative semigroups %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1969 %P 23-31 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1969_2_a2/ %G ru %F IVM_1969_2_a2