1. Akulenko, L.D., Markov, Yu.G., and Perepelkin, V.V., Inhomogeneity in the Earth’s Rotation, Dokl. Akad. Nauk, 2007, vol. 417, no. 4, pp. 483–488.
2. Capitane, N., Guinot, B., and McCarthy, D.D., Definition of the Celestial Ephemeris Origin and of UT1 in the International Reference Frame, Astron. Astrophys., 2000, vol. 355, pp. 398–405.
3. Audoin, C. and Guinot, B., The Measurement of Time: Time, Frequency, and the Atomic Clock, Cambridge: Cambridge Univ. Press, 2001. Translated under the title Izmerenie vremeni. Osnovy GRS, Moscow: Tekhnosfera, 2002.
4. Vondrak, J., Earth Rotation Parameters 1899.7–1992.0 After Reanalysis within the Hipporcos Frame, Surveys Geophys., 1999, vol. 20, pp. 169–195.
5. IERS Annual Reports, 2000–2002, Frankfurt am Mein: BKG, 2001–2003.