@article{AL_2003_42_2_a4,
     author = {S. Yu. Podzorov},
     title = {Initial {Segments} in {Rogers} {Semilattices} of $\Sigma^0_n${-Computable} {Numberings}},
     journal = {Algebra i logika},
     pages = {211--226},
     publisher = {mathdoc},
     volume = {42},
     number = {2},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2003_42_2_a4/}
}