Универзално координисано време — разлика између измена

*{{cite journal |ref=harv |last=Essen |first=L. |authorlink=Louis Essen |year=1968 |title=Time Scales |journal=Metrologia |volume=4 |issue=4 |pages=161–5 |url=http://www.leapsecond.com/history/1968-Metrologia-v4-n4-Essen.pdf |accessdate=18. 10. 2008 |doi=10.1088/0026-1394/4/4/003 |bibcode=1968Metro...4..161E }}

*{{cite journal | ref=harv| last1=Finkleman| first1=David| last2=Allen | first2=Steve | last3= Seago | first3 = John | last4 = Seaman | first4 = Rob | last5 = Seidelmann | first5 = P. Kenneth | title = The Future of Time: UTC and the Leap Second | journal=American Scientist | issue = July–August 2011 | year = 2011| page=312 | doi=10.1511/2011.91.1 | arxiv = 1106.3141v1 | volume=99| bibcode=2011arXiv1106.3141F}}

* {{cite web |ref={{SfnRef|History of TAI-UTC|c. 2009}} |url=ftp://maia.usno.navy.mil/ser7/tai-utc.dat |title=History of TAI-UTC |publisher=Time Service Dept., [[United States Naval Observatory|U.S. Naval Observatory]] |accessdate=4. 1. 2009 |year=c. 2009 |archive-url=https://web.archive.org/web/20110719193539/http://maia.usno.navy.mil/ser7/tai-utc.dat |archive-date=19. 7. 2011 |url-status=dead }}

* {{cite web | ref = harv | last1 = Horzepa | first1 = Stan | title = Surfin': Time for Ham Radio | publisher = American Radio Relay League | date=17. 9. 2010 | url = http://www.arrl.org/news/surfin-time-for-ham-radio | accessdate=24. 10. 2011 }}

* {{cite web|ref=harv|url=http://www.apparent-wind.com/gmt-explained.html|title=A Few Facts Concerning GMT, UT, and the RGO|accessdate=17. 7. 2011|last1=Langley|first1=Richard B.|date=20. 1. 1999}}

* {{cite news| ref = {{sfnref|Leap decision postponed|2012}}| url = https://www.bbc.co.uk/news/science-environment-16625614| work = BBC News| title = Leap second decision is postponed| date=19. 1. 2012}}

* {{Cite book| ref = harv | year = 1988 | last=Markowitz | first = Wm. | editor1-last = Babcock | editor1-first = A. K. | editor2-last = Wilkins | editor2-first = G. A. | title = The Earth's Rotation and Reference Frames for Geodesy and Geophysics: Proceedings of the 128th Symposium of the International Astronomical Union, held in Coolfont, West Virginia, U.S.A., 20–24 October 1986 | journal = The Earth's Rotation and Reference Frames for Geodesy and Geodynamics | volume = 128 | chapter = Comparisons of ET (Solar), ET (Lunar), UT and TDT | publisher = Kluwer Academic Publishers | location = Dordrecht | bibcode=1988IAUS..128..413M | pages = 413–418}}

* {{Cite book | ref=harv | last1 = McCarthy | first1 = Dennis D. | author1-link = Dennis McCarthy (scientist) | last2 = Seidelmann | first2 = P. Kenneth | year = 2009 | publisher = Wiley VCH | location = Weinheim | title = TIME From Earth Rotation to Atomic Physics | isbn = 978-3-527-40780-4}}

*{{cite book | ref=harv | last1 = McCarthy | first1 = D. | author-link1 = Dennis McCarthy (scientist) | last2 = Guinot | first2 = B. | chapter = Time | title = Explanatory Supplement to the Astronomical Almanac | edition = 3rd | editor-last1 = Urban | editor-first1= Sean E. | editor-last2 = Seidelmann | editor-first2 = P. Kenneth | publisher = University Science Books | location = Mill Valley, CA | date = 2013}}

* {{Cite conference |ref=harv |last1=Nelson |first1=Robert A. |last2=McCarthy |first2=Dennis D. |author2-link=Dennis McCarthy (scientist) |url=http://www.navcen.uscg.gov/pdf/cgsicMeetings/45/29a%20UTCLeapSecond.ppt |title=Coordinated Universal Time (UTC) and the Future of the Leap Second |conference=Civil GPS Interface Committee |publisher=[[United States Coast Guard]] |date=13. 9. 2005 |url-status=dead |archiveurl=https://web.archive.org/web/20110429231210/http://www.navcen.uscg.gov/pdf/cgsicMeetings/45/29a%20UTCLeapSecond.ppt |archivedate=29. 4. 2011 }}

* {{Cite journal|ref=harv|last1=Nelson|first1=Robert A.|last2=McCarthy|first2=Dennis D.|last3=Malys|first3=S.|last4=Levine|first4=J.|last5=Guinot|first5=B.|last6=Fliegel|first6=H. F.|last7=Beard|first7=R. L.|last8=Bartholomew|first8=T. R.|title=The leap second: its history and possible future|journal=Metrologia|volume=38|issue=6|pages=509–529|year=2001|doi=10.1088/0026-1394/38/6/6|url=http://www.cl.cam.ac.uk/~mgk25/time/metrologia-leapsecond.pdf|bibcode=2001Metro..38..509N}}

* {{cite web | ref = harv | last1 = Seaman | first1 = Rob | url = http://iraf.noao.edu/~seaman/leap/ | title = A Proposal to Upgrade UTC | accessdate=18. 7. 2011 | year = 2003 | url-status = dead | archiveurl = https://web.archive.org/web/20110723140249/http://iraf.noao.edu/~seaman/leap/ | archivedate=23. 7. 2011 | df = dmy-all }}

* {{Cite book |ref=harv |url=https://archive.org/stream/131123ExplanatorySupplementAstronomicalAlmanac/131123-explanatory-supplement-astronomical-almanac#page/n56/mode/1up |editor-last=Seidelmann |editor-first=P Kenneth |title=Explanatory Supplement to the Astronomical Almanac |publisher=University Science Books |edition=2nd |location=Mill Valley, CA |year=1992 |isbn=0-935702-68-7 }}