@article{AL_2001_40_5_a1,
     author = {S. A. Badaev and S. S. Goncharov},
     title = {Rogers {Semilattices} of {Families} of {Arithmetic} {Sets}},
     journal = {Algebra i logika},
     pages = {507--522},
     publisher = {mathdoc},
     volume = {40},
     number = {5},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2001_40_5_a1/}
}