@article{RM_1999_54_1_a10,
     author = {B. G. Averbukh},
     title = {Formalization of the notion of a ``number system''},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {254--255},
     publisher = {mathdoc},
     volume = {54},
     number = {1},
     year = {1999},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1999_54_1_a10/}
}