00294pam a2200109 a 4500020000500000041000500005082001000010100005500020245005400075260004300129300001200172  c  h  a621.1  aOPPENHEIM (Alanv ) and SCHAFER (Rovald W )eauthor  aDiscrete Time Signal ProcessinghTextual Document  bPrentice Hall of India New Delhic1998  axv, 879