@unpublished{TUW-188466, author = {Alizadeh, Mahdi and Schuh, Harald and Wijaya, Dudy Darmawan and Schmidt, Michael}, title = {Applying Ray-Tracing for the Upper Atmosphere studies}, year = {2010}, note = {talk: Workshop on Ray-Tracing for Space Geodetic Techniques, TU Wien; 2010-04-29 -- 2010-04-30} }