TY  - JOUR
AU  - Stefan Haesen
AU  - Leopold Verstraelen
TI  - Natural Intrinsic Geometrical Symmetries
JO  - Symmetry, integrability and geometry: methods and applications
PY  - 2009
VL  - 5
UR  - http://geodesic.mathdoc.fr/item/SIGMA_2009_5_a85/
LA  - en
ID  - SIGMA_2009_5_a85
ER  -