@article{IVM_2011_1_a7,
     author = {M. Kh. Faizrakhmanov},
     title = {A semilattice generated by superlow computably enumerable degrees},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {85--90},
     publisher = {mathdoc},
     number = {1},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2011_1_a7/}
}