@unpublished{TUW-176315, author = {Schuh, Harald}, title = {Balkan Geodetic Observing System - a Scientific Challenge for the Balkan Countries (BALGEOS)}, year = {2009}, note = {talk: Final Monitoring-Meeting of the ASO-CALL ''Research Cooperation and Networking between Austria and South-Eastern Europe'', Wien, {\"O}sterreich; 2009-05-18} }