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-12-14].Seeses5.1.1andA.1. JeffBarr.LookBeforeYouLeap–TheingLeapSedandAWSUpdated.AmazonWebServices.May18,2015.原始内容存档於May19,2015. RandallHunt.KeepingTimeWithAmazonTimeSyncService.AmazonWebServiovember29,2017[March8,2018]. Kuhn,Markus.UTCwithSmoothedLeapSedsUTC-SLS..ac.uk.2005. KevinGross.RTPandLeapSeds.IEngineeringTaskForce.June21,2012[July2,2012].原始内容存档於December16,2012. UT1NTPTimeDissemination.[2019-08-31]. 2 Walce,Patrick.TheUTanditsSolutionPDF.ProceedingsofColloquiumoimeScale.Torino.2003.原始内容存档PDF於January18,2015. Luzum,Brian.TheRoleoftheIERSintheLeapSedPDF.BIPM/ITUWorkshopoureoftheIionalTimeScale.2013.原始内容存档PDF於July15,2014. 进阶读物编辑