1. State Space Theory of Discrete Linear Control;Strejc,1981
2. Digital Control Systems;Kuo,1980
3. Design of piecewise constant gains for optimal control via Walsh functions;Chen;IEEE Trans. Aut. Control,1975
4. Solution of optimal control problem of linear distribution equations via Walsh functions;Mahaparta;IEEE Trans. Aut. Control,1980
5. Optimal control of linear systems with delays in state and control via Walsh functions;Palanissamy;IEE Proc.,1983