توقيت ذري عالمي (Arabic Wikipedia)

Analysis of information sources in references of the Wikipedia article "توقيت ذري عالمي" in Arabic language version.

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obspm.fr

"Bulletin C: Relationship Between TAI and UTC". International Earth Rotation and Reference Systems Service, Paris Observatory. مؤرشف من الأصل في 2018-11-30. اطلع عليه بتاريخ 2009-01-04.

"Bulletin C: Relationship Between TAI and UTC". International Earth Rotation and Reference Systems Service, Paris Observatory. مؤرشف من الأصل في 2018-11-30. اطلع عليه بتاريخ 2009-01-04.
"Bulletin C 43: UTC time step on the 1st of July 2012 [sic]". International Earth Rotation and Reference Systems Service, Paris Observatory. مؤرشف من الأصل في 2019-05-03. اطلع عليه بتاريخ 2012-02-14.