@article{AL_2006_45_5_a2,
     author = {W. Calvert and V. S. Harizanova and J. F. Knight and S. Miller},
     title = {Index sets of computable structures},
     journal = {Algebra i logika},
     pages = {538--574},
     publisher = {mathdoc},
     volume = {45},
     number = {5},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2006_45_5_a2/}
}