00293nam a2200121Ia 4500008004100000041001200041082001100053100002000064245005700084260000600141650000600147700001800153221030s9999    xx            000 0 und d  aEnglish  a105.23  aA. V. Oppenhein 0aSignals & Systemscby A. V. Oppenhein, A. S. Willsky  c0  aB  aA. S. Willsky