00910nam0-22003131i-450-990000851110403321200010103-7643-1664-8000085111FED01000085111(Aleph)000085111FED0100008511120001010d--------km-y0itay50------baitay-------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