TY  - JOUR
AU  - Alexander, J. C.
TI  - Introduction to Spectral Theory in Hilbert Space, by G. M. Helmberg. iii + 346 pages. Series in Applied Mathematics and Mechanics, North-Holland, Amsterdam, 6, 1969. U.S. $19.50.
JO  - Canadian mathematical bulletin
PY  - 1972
SP  - 461
EP  - 462
VL  - 15
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.1017/S0008439500031477/
DO  - 10.1017/S0008439500031477
ID  - 10_1017_S0008439500031477
ER  -