00358nam a2200133Ia 4500001000500000005001700005008004100022020001500063082001200078100002500090245002600115260002000141650006300161839220261006004109.0120911s9999 xx 000 0 und d a0138111758 a003 OPP a Oppenheim, alan v.  a Signals and systems  a Prentice hall  a System analysis 2. Signal theory (telecommunication)