%0 Journal Article %A Brunotte, Horst %T Digital semigroups %J RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications %D 2016 %P 67-79 %V 50 %N 1 %I EDP-Sciences %U http://www.numdam.org/articles/10.1051/ita/2016005/ %R 10.1051/ita/2016005 %G en %F ITA_2016__50_1_67_0