TY  - GEN
AU  - Jorgensen, Palle E. T
TI  - Spectral theory for infinitesimal generators of on-parameter groups of isometries: the mini-max principle, the Rayleigh-Ritz Technique, compact perturbation
PY  - 1980///
CY  - Aarhus
PB  - Universitet Aarhus
N1  - Contine bibliografie; Lucrarea este multigrafiata
ER  -