TY  - BOOK
AU  - Kahn, W. D. 
AU  - Vonbun, F. O.
TI  - Tracking systems, their mathematical models and their errors. Part II - Least squares treatment [NASA TN-D-3776]
U1  - NASA 
PY  - 1966///
CY  - Washington, D. C.
PB  - NASA
KW  - Mathematical models
ER  -