TY  - JOUR
AU  - Wood, Derick
TI  - Bicolored digraph grammar systems
JO  - ESAIM: Mathematical Modelling and Numerical Analysis 
PY  - 1973
SP  - 45
EP  - 52
VL  - 7
IS  - R1
PB  - Dunod
PP  - Paris
UR  - http://geodesic.mathdoc.fr/item/M2AN_1973__7_1_45_0/
LA  - en
ID  - M2AN_1973__7_1_45_0
ER  -