00349nam a2200145Ia 45000030006000000080041000060400015000471000035000622450052000972500010001492600009001593000006001685460012001740050017001860STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aFoias Ciprian; Nagy Bela, S.Z.  aHarmonic analysis of operators on hilbert space  aFirst  c1970  a0  aEnglish20220125165955.0