1. Numerical Solution of Initial Value Problems in Differential-Algebraic Equations;Brennan,1989
2. Perturbation Methods in Optimal Control;Bensoussan,1988
3. Optimization and Nonsmooth Analysis;Clarke,1983
4. Descriptor variable systems and optimal state regulation;Cobb;IEEE Trans. Automat. Control,1983
5. E. N. Devdaryani, Y. S. Ledyaev, Optimality conditions for implicit control problems