For citations:
Tikhov V.V. Countable Ideals in a Semi-Lattice of the De Enumeration Degrees. Modeling and Analysis of Information Systems. 2012;19(4):59-66. (In Russ.) https://doi.org/10.18255/1818-1015-2012-4-59-66
Tikhov V.V. Countable Ideals in a Semi-Lattice of the De Enumeration Degrees. Modeling and Analysis of Information Systems. 2012;19(4):59-66. (In Russ.) https://doi.org/10.18255/1818-1015-2012-4-59-66