1. Baarda, W., 1968. A testing procedure for use in geodetic networks. Netherlands Geodetic Commission. Publications on Geodesy. New Series 2, No. 5, Delft, The Netherlands.
2. Current state of precise point positioning and future prospects and limitations;Bisnath,2007
3. Isolating and estimating undifferenced GPS integer ambiguities;Collins,2008
4. GNSS processing at CODE: status report;Dach;J. Geod.,2009
5. Resolution of GPS carrier-phase ambiguities in precise point positioning (PPP) with daily observations;Ge;J. Geod.,2008