TY  - JOUR
AU  - Goralčík, P.
AU  - Goralčíková, A.
AU  - Koubek, V.
TI  - How much semigroup structure is needed to encode graphs ?
JO  - RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications
PY  - 1986
SP  - 191
EP  - 206
VL  - 20
IS  - 2
PB  - AFCET - Gauthier-Villars
PP  - Paris
UR  - http://www.numdam.org/item/ITA_1986__20_2_191_0/
LA  - en
ID  - ITA_1986__20_2_191_0
ER  -