TY  - RPRT
TI  - Global navigation and traffic control using satellites
AU  - Brandel, D. L.
AU  - Engels, P. D.
AU  - Keane, L. M.
AU  - Waetjen, R. M.
PY  - 1970
UR  - https://ntrs.nasa.gov/citations/19700065017
ID  - 19700065017
ER  -