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@article{AL_2015_54_4_a8, author = {I. Sh. Kalimullin and M. Kh. Faizrakhmanov}, title = {A hierarchy of classes of families and $n$-low degrees}, journal = {Algebra i logika}, pages = {536--541}, publisher = {mathdoc}, volume = {54}, number = {4}, year = {2015}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_2015_54_4_a8/} }
I. Sh. Kalimullin; M. Kh. Faizrakhmanov. A hierarchy of classes of families and $n$-low degrees. Algebra i logika, Tome 54 (2015) no. 4, pp. 536-541. http://geodesic.mathdoc.fr/item/AL_2015_54_4_a8/
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