TY  - RPRT
TI  - Analysis of ionospheric refraction error corrections for GRARR systems
AU  - Mallinckrodt, A. J.
AU  - Parker, H. C.
AU  - Berbert, J. H.
PY  - 1971
UR  - https://ntrs.nasa.gov/citations/19740010911
ID  - 19740010911
ER  -