00825nam0-22002651i-450-99000130077040332120110314181018.0000130077FED01000130077(Aleph)000130077FED0100013007720001205d1987----km-y0itay50------baengUSOperator theory, analytic functions and electrical engineeringJ.W. HeltonProvidence (RI)American Mathematical Society1987Regional conference series in mathematics68Helton,J. William59048ITUNINARICAUNIMARCBK990001300770403321C-35-(683958MA1MA1Operator theory, analytic functions and electrical engineering384076UNINA