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With this publication is intended to demonstrate the possibility of practical realization of European Terrestrial Reference System 89 (ETRS89) for the territory of the Republic of Bulgaria, by developing an intraplate velocity field model using velocities of a network of continuously operating GNSS stations. The introduction of the ETRS89 is aiming to unify national reference systems for geodetic measurements, cartography, GIS, research and navigation in Europe. The EUREF Permanent GNSS Network (EPN), which consis...