TY  - JOUR
AU  - Engelfriet, Joost
AU  - Leih, George
TI  - Complexity of boundary graph languages
JO  - RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications
PY  - 1990
SP  - 267
EP  - 274
VL  - 24
IS  - 3
PB  - EDP-Sciences
UR  - http://www.numdam.org/item/ITA_1990__24_3_267_0/
LA  - en
ID  - ITA_1990__24_3_267_0
ER  -