@article{TUW-270748, author = {Mulic, Medzida and Natras, Randa and Halilovic, Dzana and Krdzalic, Dzevad}, title = {Investigation of Ionospheric Variations and Sudden Disturbances as a Source of GNSS Errors and Earthquake Precursors}, journal = {Scientific Journal of Civil Engineering}, year = {2017}, volume = {6}, number = {2}, pages = {61--68}, url = {https://publik.tuwien.ac.at/files/publik_270748.pdf} }