TY  - JOUR
AU  - Piziak, Robert
TI  - Orthogonality-preserving transformations on quadratic spaces
JO  - Portugaliae mathematica
PY  - 1985
SP  - 201
EP  - 212
VL  - 43
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/PORMA_1985__43_2_114500/
LA  - en
ID  - PORMA_1985__43_2_114500
ER  -