LEADER 00825nam0-22002651i-450- 001 990001300770403321 005 20110314181018.0 035 $a000130077 035 $aFED01000130077 035 $a(Aleph)000130077FED01 035 $a000130077 100 $a20001205d1987----km-y0itay50------ba 101 0 $aeng 102 $aUS 200 1 $aOperator theory, analytic functions and electrical engineering$fJ.W. Helton 210 $aProvidence (RI)$cAmerican Mathematical Society$d1987 225 1 $aRegional conference series in mathematics$v68 700 1$aHelton,$bJ. William$059048 801 0$aIT$bUNINA$gRICA$2UNIMARC 901 $aBK 912 $a990001300770403321 952 $aC-35-(68$b3958$fMA1 959 $aMA1 996 $aOperator theory, analytic functions and electrical engineering$9384076 997 $aUNINA