TY  - JOUR
AU  - G. Hjorth
TI  - On invariants for measure preserving transformations
JO  - Fundamenta Mathematicae
PY  - 2001
SP  - 51
EP  - 84
VL  - 169
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/fm169-1-2/
DO  - 10.4064/fm169-1-2
LA  - en
ID  - 10_4064_fm169_1_2
ER  -