TY  - JOUR
AU  - Evelyne Hubert
AU  - Peter J. Olver
TI  - Differential Invariants of Conformal and Projective Surfaces
JO  - Symmetry, integrability and geometry: methods and applications
PY  - 2007
VL  - 3
UR  - http://geodesic.mathdoc.fr/item/SIGMA_2007_3_a96/
LA  - en
ID  - SIGMA_2007_3_a96
ER  -