TY  - RPRT
TI  - Modifications to Encke's method for long arc orbit determination solutions
AU  - Lundberg, J. B.
AU  - Bettadpur, S.
AU  - Eanes, R. J.
PY  - 1992
UR  - https://ntrs.nasa.gov/citations/19920060629
ID  - 19920060629
ER  -