00767nam0-22002531i-450-990001131420403321000113142FED01000113142(Aleph)000113142FED0100011314220000920d1985----km-y0itay50------baengAnalytic pertubation theory for matrices and operatorsby Baumgartel.Basel [etc.]Birkhauser1985Operator theory, advances and applications15Baumgärtel,Hellmut348144ITUNINARICAUNIMARCBK990001131420403321C-5-(154748MA1MA1Analytic pertubation theory for matrices and operators345505UNINAING01