@article{AL_2015_54_4_a6,
     author = {E. B. Fokina and S. S. Goncharov and V. Harizanov and O. V. Kudinov and D. Turetsky},
     title = {Index sets for $n$-decidable structures categorical relative to $m$-decidable presentations},
     journal = {Algebra i logika},
     pages = {520--528},
     publisher = {mathdoc},
     volume = {54},
     number = {4},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2015_54_4_a6/}
}