TY  - RPRT
TI  - A simple dead-reckoning navigational system
AU  - Walls, B. F.
AU  - Mastin, W. C.
AU  - Broussard, P., Jr.
PY  - 1972
UR  - https://ntrs.nasa.gov/citations/19720000408
ID  - 19720000408
ER  -