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@article{MZM_1992_51_1_a15, author = {K. K. Pivnitskaya}, title = {A characterization of the class of enumerable languages}, journal = {Matemati\v{c}eskie zametki}, pages = {134--140}, publisher = {mathdoc}, volume = {51}, number = {1}, year = {1992}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1992_51_1_a15/} }
K. K. Pivnitskaya. A characterization of the class of enumerable languages. Matematičeskie zametki, Tome 51 (1992) no. 1, pp. 134-140. http://geodesic.mathdoc.fr/item/MZM_1992_51_1_a15/