TY  - JOUR
AU  - S. Stamatakis
AU  - I. Kaffas
AU  - I.-I. Papadopoulou 
TI  - Characterizations of Ruled Surfaces in R3 and of Hyperquadrics in Rn+1 via Relative Geometric Invariants
JO  - Journal for geometry and graphics
PY  - 2014
SP  - 217
EP  - 223
VL  - 18
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/JGG_2014_18_2_JGG_2014_18_2_a6/
ID  - JGG_2014_18_2_JGG_2014_18_2_a6
ER  -