TY  - JOUR
AU  - POWELL, GEOFFREY
TI  - ON THE DOUBLE TRANSFER AND THE f-INVARIANT
JO  - Glasgow mathematical journal
PY  - 2012
SP  - 547
EP  - 577
VL  - 54
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.1017/S0017089512000158/
DO  - 10.1017/S0017089512000158
ID  - 10_1017_S0017089512000158
ER  -