@article{IVM_1988_3_a10,
     author = {E. A. Burenin},
     title = {The upper semilattice of $m$-degrees that are contained in complete {Turing} degree},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {63--66},
     publisher = {mathdoc},
     number = {3},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1988_3_a10/}
}