TY  - JOUR
AU  - Knast, Robert
TI  - A semigroup characterization of dot-depth one languages
JO  - RAIRO. Informatique théorique
PY  - 1983
SP  - 321
EP  - 330
VL  - 17
IS  - 4
PB  - EDP-Sciences
UR  - http://www.numdam.org/item/ITA_1983__17_4_321_0/
LA  - en
ID  - ITA_1983__17_4_321_0
ER  -