@article{05014500,
title = {Counting optimal joint digit expansions.},
journal = {Integers},
volume = {5},
year = {2005},
zbl = {1087.11004},
language = {en},
url = {http://dml.mathdoc.fr/item/05014500}
}
Grabner, Peter J.; Heuberger, Clemens; Prodinger, Helmut. Counting optimal joint digit expansions.. Integers, Tome 5 (2005) . http://gdmltest.u-ga.fr/item/05014500/