TY  - JOUR
AU  - Helfenstein, H.G.
TI  - Introduction to differential geometry and Riemannian geometry, by E. Kreyszig. University of Toronto Press, 1968. xii + 370 pages.
JO  - Canadian mathematical bulletin
PY  - 1969
SP  - 371
EP  - 372
VL  - 12
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.1017/S0008439500030575/
DO  - 10.1017/S0008439500030575
ID  - 10_1017_S0008439500030575
ER  -