HEFTY, J., & IGONDOVÁ, M. (2010). Diurnal and semi-diurnal coordinate variations observed in EUREF permanent GPS network – a case study for period from 2004.0 to 2006.9. Contributions to Geophysics and Geodesy, 40(3), 225-247. https://doi.org/10.2478/v10126-010-0010-8