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2. Abels, J., Benner, P.: DAREX– a collection of benchmark examples for discrete-time algebraic Riccati equations (version 2.0). SLICOT Working Note 1999-15. Available from http://www.slicot.org (1999)
3. Anderson, B., Moore, J.: Optimal Filtering. Prentice-Hall, Englewood Cliffs (1979)
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