TY  - RPRT
TI  - The ionospheric impact on GPS performance in southern polar region
AU  - C.-K. Hong
AU  - D. A. Grejner-Brzezinska
AU  - N. Arslan
AU  - M. Willis
AU  - L. Hothem
PY  - 2006
UR  - https://pubs.usgs.gov/publication/70028645
ID  - 70028645
ER  -