TY  - JOUR
AU  - J. J. Fowler
AU  - E. Gethner 
TI  - Counting Escher's m x m Ribbon Patterns
JO  - Journal for geometry and graphics
PY  - 2006
SP  - 1
EP  - 13
VL  - 10
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/JGG_2006_10_1_JGG_2006_10_1_a0/
ID  - JGG_2006_10_1_JGG_2006_10_1_a0
ER  -