1. L. Richardson, Weather Prediction by Numerical Process (Cambridge University Press, Cambridge, 1922).
2. J. G. Charney, “The use of the primitive equations of motion in numerical prediction,” Tellus 7, 22–26 (1955).
3. N. A. Phillips, “On the problem of initial data for the primitive equations,” Tellus 12, 121–126 (1960).
4. A. H. Jazwinski, Stochastic Processes and Filtering Theory (Academic, London, 1970).
5. R. S. Bucy and P. D. Joseph, Filtering for Stochastic Processes with Applications to Guidance (Chelsea, New York, 1987).