TY  - RPRT
TI  - Precise measurement method for ionospheric total electron content using signals from GPS satellites
AU  - Imae, Michito
AU  - Kiuchi, Hitoshi
AU  - Kaneko, Akihiro
AU  - Hama, Shinichi
AU  - Miki, Chihiro
PY  - 1990
UR  - https://ntrs.nasa.gov/citations/19910016460
ID  - 19910016460
ER  -