1. Agrotis, L., San, P.A., Dow, J., Zandbergen, R., Svehla, D., Ballereau, A. ESOC’s RETINA system and the generation of the IGS RT combination. in: IGS Workshop, 28.Jun. – 2. Jul. 2010, Newcastle Upon Tyne, UK, 2010.
2. Banville, S., Langley, R. Improving real-time kinematic PPP with instantaneous cycle-slip correction. in: Proceedings of ION GNSS 2009, 16–19 September, GA, USA, 2009.
3. Bar-Sever, Y., Bell, B., Dorsey, A., Srinivasan, J. Space applications of the NASA global differential GPS system. Institute of Navigation, ION GNSS2003, Sept. 9–12, Portland, Oregon, USA, 2003.
4. Bar-Sever, Y. Complete real-time GLONASS product line from the Global Differential GPS (GDGPS) system. Institude of Navigation, ION GNSS2010, Sept. 21–24, Portland, Oregon, USA, 2010.
5. GPS single-frequency orbit determination for low Earth orbiting satellites;Bock;Adv. Space Res.,2009