@article{IVM_2010_4_a0,
     author = {I. I. Batyrshin},
     title = {Isolated 2-computably enumerable $Q$-degrees},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {3--9},
     publisher = {mathdoc},
     number = {4},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2010_4_a0/}
}