00292nam a2200109Ia 4500008004100000041000800041082001800049100002200067245003100089260005400120300000800174231228s1997    xx            000 0 und d  aeng  a621.3822bPOR  aPOROKIS (John G.)  aDigital Signal Processing.  aNew DelhibPrentice Hall of India New Delhic1997  a968