@unpublished{TUW-230003, author = {Li, Quing and Chodhury, M. and Rizos, Chris and Weber, Robert}, title = {Combined Processing of GPS{\&}Beidou Measurements: Some First Observations}, year = {2014}, note = {poster presentation: IGS Workshop 2014, Pasadena, CA, USA; 2014-06-23 -- 2014-06-27} }