@unpublished{TUW-218149, author = {Hinterberger, Fabian and Weber, Robert}, title = {Precise Point Positioning (PPP) - Berechnungsmodell, Einsatzbereiche, Grenzen}, year = {2013}, note = {invited; talk: DVW Seminar, Karlsruhe, Germany; 2013-03-14 -- 2013-03-15} }