1. Ahmed, N. U.,Elements of Finite Dimensional Systems and Control Theory, Longman Scientific and Technical: Essex, 1988.
2. Brenan, K. E., Campbell, S. L., and Petzold, L. R.,Numerical Solution of Initial-Value Problems in Differential-Algebraic Equations, North-Holland: New York, 1989.
3. Bryson, A. E., and Ho, Y. C.,Applied Optimal Control, Halstead Press: New York, 1969.
4. Carelli, R. and Kelly, R., “Adaptive control of constrained robots modelled by singular systems,”Proc. 28th IEEE Conference on Decision and Control, vol. 3, pp. 2635–2640, 1989.
5. Cesari, L.,Optimization—Theory and Applications, Springer-Verlag: New York, 1983.