Јединица времена (Serbian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Јединица времена" in Serbian language version.

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books.google.com

McCarthy, Dennis D.; Seidelmann, P. Kenneth (2009). Time: from Earth rotation to atomic physics. Wiley-VCH. стр. 18. ISBN 978-3-527-40780-4. , Extract of pp. 18
Jones, Floyd Nolen (2005). The Chronology Of The Old Testament (15th изд.). New Leaf Publishing Group. стр. 287. ISBN 978-0-89051-416-0. , Extract of pp. 287

„Definitions of the SI base units”. The NIST reference on Constants, Units, and Uncertainty. National Institute of Standards and Technology. Приступљено 4. 3. 2016.

„It only takes a zeptosecond: Scientists measure smallest fragment of time”. RT International (на језику: енглески). Приступљено 20. 4. 2017.