The 1st International Workshop on the Quality of Geodetic Observation and Monitoring Systems (QuGOMS'11) : Proceedings of the 2011 IAG International Workshop, Munich, Germany April 13-15, 2011 - Kutterer, Hansjörg.; Seitz, Florian.; Alkhatib, Hamza.; Schmidt, Michael. (Springer International Publishing : Imprint: Springer, 2015)