TY  - JOUR
AU  - G. Lucca
TI  - Symmetrical Patterns by Means of Contour Plots
JO  - Visual Mathematics
PY  - 2004
VL  - 6
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/VM_2004_6_3_a1/
LA  - en
ID  - VM_2004_6_3_a1
ER  -