@article{AL_2003_42_2_a2,
     author = {S. S. Goncharov and R. Downey and D. Hirschfeldt},
     title = {Degree {Spectra} of {Relations} on {Boolean} {Algebras}},
     journal = {Algebra i logika},
     pages = {182--193},
     publisher = {mathdoc},
     volume = {42},
     number = {2},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2003_42_2_a2/}
}