1. Zheng DW, Yu NH (1996) Earth rotation and it’s relations to geophysical phenomena: the changes of length of the day. J Adv Geophys 11(2):81–101 (In Chinese)
2. Beutler G (1998) The role of GPS in space geodesy. In: Teunissen PJG, Kleusberg A (eds) GPS for geodesy, 2nd edn. Springer, Berlin
3. Bizouard C, Gambis D (2005) The combined solution C04 for earth orientation parameters consistent with international reference frame 2005.
http://hpiers.obspm.fr/eoppc/products/combined/C04_05.guide.pdf
4. Gambis D (2004) Monitoring earth orientation using space-geodetic techniques: state-of-the -art and prospective. J Geodesy 78(4–5):295–303
5. Ferland R, Piraszewski M (2009) The IGS-combined stations coordinates, earth rotation parameters and apparent geocenter. J Geodesy 83:385–392