1. Ananyev, В.I., Pischulina, I. Ya. (1982). Minimax Quadratic Filtering for Time-Lag Systems, in: Differential Control Systems, Ural Sci. Center, A. N. SSR, Sverdlovsk, (in Russian.)
2. Applied Nonlinear Analysis;Aubin,1984
3. Recursive State Estimation for a Setmembership Description of Uncertainty;Bertsekas;IEEE Trans. Automatic Control,1971
4. Boguslavski, I.A. (1971). On the Estimation of a Linear System under Statistical Uncertainty, Avtomatika i Telemechanika, 1. (in Russian.)
5. Estimation of the Phase State of Dynamical Systems;Chernousko,1988