00449nam a2200157Ia 4500008004100000100001500041245003000056245001500086260004000101260000900141300003100150440003700181650004100218650001500259650001700274180910s9999    xx            000 0 und d  aGray, Jim.  aCommunications of the ACM  cJim, Gray.  bAssociation for Computing Machinery  c2008  apages 2-112, November 2008  aCommunications of the ACMv51:11  aAssociation for Computing Machinery.  aComputers.  aPeriodicals.