1. Optimal Control: Linear Quadratic Methods;Anderson,1989
2. Data-based synthesis of a multivariable linear-quadratic regulator;Chan;Automatica,1996
3. W. Favoreel, de Moor, B., Gevers, M. and P. van Overschee. Model-free subspace-based LQG-design. ESAT-SISTA Technical Report 98–34, Katholieke Universiteit Leuven, 1998.
4. Y. Fujisaki, Duan, Y., and M. Ikeda. System representation and optimal control in input-output data space. Proc. 10th IFAC/IFORS/IMACS/IFIP Symposium on Large Scale Systems, pp. 197-202, Osaka, Japan, 2004.
5. Discrete-time LQG dynamic controller design using plant Markov parameters;Furuta;Automatica,1995