1. Proposed two-step observing monument applicable to high precision surveying by GPS;Fejes;SGMS (Space Geodetic Measurements Sites Subcommission) Newsl.,1991
2. The Hungarian Geodynamic GPS Reference Network, status and perspectives;Fejes;C. R. Session, Journees Luxembourgoises de Geodynamique,1991
3. The Hungarian GPS deformation study program and its geological background (in Hungarian);Gazsó;Geodézia Kartogr.,1992
4. On the recent crustal movements in the Pannonian Basin;Joó;Acta Geod. Geophys. Mon. Hung.,1990