TY  - JOUR
AU  - Ackerman, Neill H.
AU  - Hsiung, C. C.
TI  - Isometry of Riemannian Manifolds to Spheres, II
JO  - Canadian journal of mathematics
PY  - 1976
SP  - 63
EP  - 72
VL  - 28
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1976-007-7/
DO  - 10.4153/CJM-1976-007-7
ID  - 10_4153_CJM_1976_007_7
ER  -