TY  - RPRT
TI  - A fixed-lag Kalman smoother for retrospective data assimilation
AU  - Cohn, Stephen E.
AU  - Sivakumaran, N. S.
AU  - Todling, Ricardo
PY  - 1994
UR  - https://ntrs.nasa.gov/citations/19950036328
ID  - 19950036328
ER  -