TY  - JOUR
AU  - M. Altman
TI  - The cosine equation method for the eigenproblem of bounded normal operators in Hilbert space
JO  - Annales Polonici Mathematici
PY  - 1964
SP  - 353
EP  - 357
VL  - 16
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/ap-16-3-353-357/
DO  - 10.4064/ap-16-3-353-357
LA  - en
ID  - 10_4064_ap_16_3_353_357
ER  -