00382nam a2200145Ia 4500008004100000020001400041041000800055082001800063100004000081245002500121250000600146260005200152300001200204650002000216210716s1992    xx            000 0 und d  a876925034  aeng  a621.3822 OPPA  aOppenheim, Alan V; Willsky, Alan S.  aSignals and systems.  a1  aNew DelhibPrentice Hall of India PVt Ltdc1992  axix,796  aDigital Systems