@article{AL_2011_50_6_a3,
     author = {I. A. Lavrov},
     title = {Computably enumerable sets and related issues},
     journal = {Algebra i logika},
     pages = {733--758},
     publisher = {mathdoc},
     volume = {50},
     number = {6},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2011_50_6_a3/}
}