TY  - GEN
AU  - Jorgensen, P. E. T
TI  - Spectral theory for infinitesimal generators of one-parameter groups of isometries: the minimax principle and compact perturbations
PY  - 1980////81
CY  - Aarhus
PB  - Universitet Aarhus
N1  - Contine bibliografie; Lucrarea este multigrafiata
ER  -