000 00278nam a2200121Ia 4500
008 160122s9999 xx 000 0 und d
041 _aEnglish
100 _aAlan V Oppenheim
245 _aSignals and systems
260 _bDelhi:phI
_c2001
300 _a957p.
650 _aElectronic
999 _c635
_d635