@unpublished{TUW-274875, author = {Halilovic, Dzana and Natras, Randa and Tabakovic, A.}, title = {Solar flare effect on the ionosphere and GNSS positioning accuracy in Western Balkan Region}, year = {2018}, note = {talk: 1st Western Balkan Conference on GIS, Mine Surveying, Geodesy and Geomatics, Tirana; 2018-10-03 -- 2018-10-04} }