TY  - JOUR
AU  - Grove, Karsten
AU  - Petersen, Peter
TI  - A pinching theorem for homotopy spheres
JO  - Journal of the American Mathematical Society
PY  - 1990
SP  - 671
EP  - 677
VL  - 03
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-1990-1049696-6/
DO  - 10.1090/S0894-0347-1990-1049696-6
ID  - 10_1090_S0894_0347_1990_1049696_6
ER  -