@article{IVM_1969_2_a2,
     author = {\`E. A. Golubov},
     title = {The finitary approximability of separable naturally linearly ordered commutative semigroups},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {23--31},
     publisher = {mathdoc},
     number = {2},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1969_2_a2/}
}