References 1 Denham, W. F. and Pines, S., Sequential Estimation When Measurement Function Nonlinearity Is Comparable to Measurement Error, AIAA Journal, Vol. 4, No. 6, June 1966, pp. 1071-1076. 2 Toda, N. F., Schlee, F. H., and Obsharsky, P., Region of Kalman Filter Convergence for Several Autonomous Navigation Modes, AIAA Journal, Vol. 7, No. 4, April 1969, pp. 622-627. 3 Athans, M., Wishner, R. P., and Bertolini, A., Suboptimal State Estimation for Continuous-Time Nonlinear Systems from Discrete Noisy Measurements, IEEE Transactions on Automatic Control Vol. AC-13, No. 5, Oct. 1968, pp. 504-514. 4 Jazwinski, A. H., Stochastic Processes and Filtering Theory, Academic Press, New York, 1970, pp. 340-346.
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