@article{DAN_1997_352_3_a2,
     author = {S. S. Goncharov and B. Khoussainov},
     title = {On the spectrum of the degrees of decidable relations},
     journal = {Doklady Akademii Nauk},
     pages = {301--303},
     publisher = {mathdoc},
     volume = {352},
     number = {3},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1997_352_3_a2/}
}