1. Precision GPS surveying after Y-code;Ashjaee,1992
2. Fixing the GPS bad attitude: Modeling GPS satellite yaw during eclipse seasons;Bar-Sever,1995
3. Higher-order ionospheric effects on the Global Positioning System observables and means of modeling them;Bassiri;Manuscripta Geodaetica,1993
4. LEICA SR-299 receiver performance in static and kinematic applications;Becker,1993
5. Proceedings of the 1993 IGS Workshop;Beutler,1993