1. ANDERSON , L. R. , 1978 , Proc. Joint American Control Conf. , Philadelphia , p. 153 ; 1980,Ibid., San Francisco, WP9-E .
2. A Method of Order Reduction for Structural Dynamics Based on Riccati Iteration
3. AVRAMOVIC , B. , 1979 , 18th I.E.E.E. Conf. on Decision and Control , Ford Lauderdale , p. 684 .