TY  - RPRT
TI  - Second-order perturbation angle techniques for accurately simulating sighting problems of a space sextant
AU  - Grover, K. C.
AU  - Kurkowski, R. L.
PY  - 1965
UR  - https://ntrs.nasa.gov/citations/19650014781
ID  - 19650014781
ER  -