@article{AL_2001_40_5_a4,
     author = {N. T. Kogabaev},
     title = {Universal {Numbering} for {Constructive} $I${-Algebras}},
     journal = {Algebra i logika},
     pages = {561--579},
     publisher = {mathdoc},
     volume = {40},
     number = {5},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2001_40_5_a4/}
}