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@article{DAN_1965_165_4_a5, author = {Ya. L. Kreinin}, title = {On $C\Phi$-kernels of sets effectively different from $\Phi$-sets}, journal = {Doklady Akademii Nauk}, pages = {752--755}, publisher = {mathdoc}, volume = {165}, number = {4}, year = {1965}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1965_165_4_a5/} }
Ya. L. Kreinin. On $C\Phi$-kernels of sets effectively different from $\Phi$-sets. Doklady Akademii Nauk, Tome 165 (1965) no. 4, pp. 752-755. http://geodesic.mathdoc.fr/item/DAN_1965_165_4_a5/