Integrated VLBI FWF P23143 Project-Leader: Johannes Böhm (1 July 2011 – 31 December 2014) Further reading: Krásná H., Böhm J., Schuh H. (2013). Free core nutation observed by VLBI, Astronomy and Astrophysics, 555, A29. Krásná H., Böhm J., Schuh H. (2013). Tidal Love and Shida numbers estimated by geodetic VLBI, Journal of Geodynamics, Vol. 70, pp. 21-27.