00305nam a2200121Ia 45000030006000000080041000060400015000471000021000622450049000832600022001325460012001540050017001660STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aSaaty Thomas, L.  aElements of queeing theory:With applications  bMcgraw hillc1961  aEnglish20220125170048.0