TY  - JOUR
AU  - R. de Sapio
TI  - Differential Structures on a Product of Spheres.
JO  - Commentarii mathematici Helvetici
PY  - 1969
SP  - 61
EP  - 69
VL  - 44
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMH_1969__44_139381/
ID  - CMH_1969__44_139381
ER  -