TY  - RPRT
TI  - GPS-based orbit determination and point positioning under selective availability
AU  - Bar-Sever, Yoaz E.
AU  - Yunck, Thomas P.
AU  - Wu, Sien-Chong
PY  - 1990
UR  - https://ntrs.nasa.gov/citations/19920034312
ID  - 19920034312
ER  -