@article{1102806133,
author = {Hoffman, D. G. and Klarner, D. A.},
title = {Sets of integers closed under affine operators---the closure of finite sets.},
journal = {Pacific J. Math.},
volume = {79},
number = {2},
year = {1978},
pages = { 337-344},
language = {en},
url = {http://dml.mathdoc.fr/item/1102806133}
}
Hoffman, D. G.; Klarner, D. A. Sets of integers closed under affine operators---the closure of finite sets.. Pacific J. Math., Tome 79 (1978) no. 2, pp. 337-344. http://gdmltest.u-ga.fr/item/1102806133/