TY  - RPRT
TI  - A neighboring optimum feedback control scheme based on estimated time-to-go with application to re-entry flight paths.
AU  - Bryson, A. E., Jr.
AU  - Speyer, J. L.
PY  - 1968
UR  - https://ntrs.nasa.gov/citations/19680046095
ID  - 19680046095
ER  -