1. A Square Root Formulation of the Kalman Covariance Equations;Andrews;AIAA J.,1968
2. “Optimization of Stochastic Systems.”;Aoki,1967
3. “An Introduction to Astrodynamics.”;Baker,1967
4. A Statistical Optimizing Navigation Procedure for Space Flight;Battin;ARS J.,1962
5. R. H. Battin et al., Guidance System Operations Plan for Manned CM Earth Orbital Missions. M.I.T., Cambridge, Massachusetts, Report R-547, December 1967.