1. [1] Bevis , M., 2010. Researchers Show How far South American Cities Moved in Quake. http://researchnews.osu.edu/archive/chilequakemap.htm. & http://researchnews.osu.edu/ archive/chilemoves.htm.

2. [2] Natural Resources Canada: Online Global GPS Processing Service (CSRS-PPP). http://www.geod.nrcan.gc.ca/products-produits/ppp_e.php.

3. [3] Asgari, J., 2005. Etude de Modèles Prédictifs dans un Réseau de Stations GPS Permanents. Ph.D. thesis, Ecole Doctorale Astronomie & Astrophysique d'Ile de France, Paris Observatory, France.

4. [4] Kouba, J., 2009. A Guide to Using International GNSS Service (IGS) Products. http://igscb.jpl.nasa.gov/components/usage.html.

5. [5] Witchayangkoon, B., 2000. Elements of GPS Precise Point Positioning. Ph.D. thesis, Department of Spatial Information Science and Engineering, University of Maine, Orono, Maine, USA.

6. [6] Gao, Y. and Wojciechowski, A., 2004. High Precision Kinematic Positioning using Single Dual-frequency GPS Receiver. ISPRS-2004.

7. [7] García-Fernández, M., Markgraf, M., and Montenbruck, O., 2008. Spin Rate Estimation of Sounding Rockets Using GPS Wind-up. GPS Solutions, 12(3), 155-161. [DOI:10.1007/s10291-007-0074-8]

8. [8] Xu, G., 2003. GPS Theory, Algorithms and Applications. Springer Verlag.

9. [9] Boucher, C. and Altamimi, Z., 1996. ITRF and its Relationship to GPS. GPS World, 7 (9), pp. 71-74. http://lareg.ensg.ign.fr/CIAG/WITRF/ITRF-GPS.html.

10. [10] Teunissen, P., Jonkman, N. and Tiberius, C., (1998) Weighting GPS dual frequency observations : Bearing the cross of cross-correlation. GPS Solutions, 2 (2), 28-37. [DOI:10.1007/PL00000033]

11. [11] Neta, B., Sagovac, C., Danielson, D. and Clynch, J., 1996. Fast Interpolation for Global Positioning System (GPS) Satellite Orbits.www.math.nps.navy.mil/~bneta/interp.ps.

12. [12] UNAVCO, The University NAVSTAR Consortium: http://www.unavco.org/unavco.html.

13. [13] Schaer, S., 1999. Mapping and Predicting the Earth's Ionosphere Using the Global Positioning System. Ph.D. thesis, Astronomical Institute of the University of Berne, Berne, Switzerland.

14. [14] Odijk, D., 2001. Instantaneous GPS Positioning under Geomagnetic Storm Conditions. GPS Solutions, 5(2), 29-42. [DOI:10.1007/PL00012884]

15. [15] Hofmann-Wellenhof, B., Lichtenegger, H. and Wasle, E., 2008. GNSS - Global Navigation Satellite Systems. Springer-Verlag Wien.

16. [16] Le, AQ. , Tiberius, CCJM. , Van der Marel and H., Jakowski, N., 2008. Use of Global and Regional Ionosphere Maps for Single-Frequency Precise Point Positioning. International Association of Geodesy Symposia, 133(4), 759-769, DOI: 10.1007/978-3-540-85426-5_87. [DOI:10.1007/978-3-540-85426-5_87]

17. [17] Le, AQ. and Tiberius, CCJM., 2007. Single-frequency Precise Point positioning with Optimal Filtering. GPS Solutions, 11(1), 61-96. [DOI:10.1007/s10291-006-0033-9]

18. [18] Bisnath S.B., Beran T. and Langley RB, 2002. Precise Platform Positioning with a Single GPS Receiver. GPS World, April 2002, 42–49.

19. [19] Øvstedal O., 2001. Absolute Positioning with Single Frequency GPS Receivers. GPS Solutions, 5(4), 33-44. [DOI:10.1007/PL00012910]

20. [20] Moreno, B., Radicella, S., de Lacy, M C., Herraiz, M. and Rodriguez-Caderot, G., 2011. On the Effects of the Ionospheric Disturbances on Precise Point Positioning at Equatorial Latitudes. GPS Solutions, Online FirstTM, 23 December 2010.