1. N.U. Ahmed, Elements of Finite-Dimensional Systems and Control Theory. Longman Scientific and Technical, Essex, 1988.
2. H.T. Banks and J.A. Burns, Hereditary control problem: Numerical methods based on averaging approximations. SIAM Journal of Control and Optimization, 6, 1978, 169–208.
3. F. Benyah and L.S. Jennings, Ill-conditioning in optimal control computation. Sixth International Colloquium on Numerical Analysis and Computer Science with Applications, Plovdiv, Bulgaria, August, 1997. Published in Proceedings of the Eighth International Colloquium on Differential Equations, D. Bainov ed., 81–88, VSP, Utrecht, 1998.
4. F. Benyah and L.S. Jennings, The L-curve and regularization of optimal control. In preparation.
5. W.E. Bosarge, Jr., and O.G. Johnson, Direct method approximation to the state regulator control problem using a Ritz-Trefftz sub-optimal control. IEEE Transactions on Automatic Control, 15, 1970, 627–631.