00937nam0-22003251i-450 99000085111040332120200211153600.03-7643-1664-8000085111FED01000085111(Aleph)000085111FED0100008511120001010d1985----km-y0itay50------baengCHy-------001yyAnalytic perturbation theory for matrices and operatorsH. BaumgartelBaselBirkhauser Verlag1985427 p.24 cmOperator theory, advances and applications15515.724Baumgärtel,Hellmut348144ITUNINARICAUNIMARCBK99000085111040332102 28 D 294968FINBNFINBNAnalytic Perturbation Theory for Matrices and Operators348474UNINAING01