@article{VMJ_2009_11_1_a4,
     author = {Yu. F. Korobeinik},
     title = {On $A$-representing {systems.~I}},
     journal = {Vladikavkazskij matemati\v{c}eskij \v{z}urnal},
     pages = {43--53},
     publisher = {mathdoc},
     volume = {11},
     number = {1},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMJ_2009_11_1_a4/}
}