@article{IVM_2001_4_a3,
     author = {I. Sh. Kalimullin},
     title = {On elementary theories of semilattices of $n$-recursively enumerable degrees with respect to enumerability},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {24--27},
     publisher = {mathdoc},
     number = {4},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2001_4_a3/}
}