00453nam a2200145Ia 4500008004100000020001800041041000800059082001800067100002300085245002500108260002800133300000800161952012100169999001700290211209s2015 xx 000 0 und d a9789332550230 aeng a621.38223 OPP aOPPENHEIM, ALAN V. aSIGNALS AND SYSTEMS  bPEARSON EDUCATIONc2015 a957 00104070aRITbRITcEC-U2d2021-12-31l2m1o621.38223 OPPp73071r2022-05-19 00:00:00s2022-04-23w2021-12-31yBK c73071d73071