TY  - JOUR
AU  - G. Weiss
AU  - H. Martini
TI  - On Curves and Surfaces in Illumination Geometry
JO  - Journal for geometry and graphics
PY  - 2000
SP  - 169
EP  - 18
VL  - 4
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/JGG_2000_4_2_a6/
ID  - JGG_2000_4_2_a6
ER  -