00937nam0-22003011i-450-9900010974304033213-540-51783-9000109743FED01000109743(Aleph)000109743FED0100010974320000920d1989----km-y0itay50------baengSchroedinger OperatorsProceedings of the Nordic Summer School in Mathematics held at Sandbjerg Slot, Sonderborg, Denmark, August 1-12, 1988H. Holden, A. Jensen (Eds.)Berlin [etc.]Springer-Verlag1989Lecture notes in physics345Meccanica quantistica530.12Holden,Helge52245Jensen,ArneITUNINARICAUNIMARCBK99000109743040332122-19016998FI1FI1Schroedinger Operators335480UNINAING01