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@article{AL_1990_29_3_a2, author = {A. N. Degtev}, title = {Recursive-combinatorial properties of subsets of natural}, journal = {Algebra i logika}, pages = {303--314}, publisher = {mathdoc}, volume = {29}, number = {3}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1990_29_3_a2/} }
A. N. Degtev. Recursive-combinatorial properties of subsets of natural. Algebra i logika, Tome 29 (1990) no. 3, pp. 303-314. http://geodesic.mathdoc.fr/item/AL_1990_29_3_a2/