@article{AL_1969_8_6_a10,
     author = {A. B. Khutoretskii},
     title = {Nonprincipal numerations},
     journal = {Algebra i logika},
     pages = {726--732},
     publisher = {mathdoc},
     volume = {8},
     number = {6},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1969_8_6_a10/}
}