1. On abstract stochastic bilinear equations with white noise inputs;Balakrishnan;Appl. Math. Optimiz.,1983
2. Optimal projection/maximum entropy stochastic modelling and reduced order design synthesis;Bernstein,1985
3. Spectral systems;Curtain;Int. J. Control,1984
4. Reduced order models for distributed systems based on Hankel norm approximations. Dynamics of control of large structures;Curtain,1985