TY  - JOUR
AU  - E. Kozniewski 
TI  - On the Existence of Shapes of Roofs
JO  - Journal for geometry and graphics
PY  - 2004
SP  - 185
EP  - 198
VL  - 8
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/JGG_2004_8_2_JGG_2004_8_2_a5/
ID  - JGG_2004_8_2_JGG_2004_8_2_a5
ER  -