1. U. Ascher, On numerical differential algebraic problems with application to semiconductor device simulation, SIAM J. Numer. Anal., to appear.
2. Solving the optimal control problem using a nonlinear programming technique, part I: general formulation;Betts,1984
3. Backward difference approximations of nonlinear differential-algebraic equations;Brenan,1985
4. K.E. Brenan and L.R. Petzold, The numerical solution of higher index differential/algebraic equations by implicit Runge-Kutta methods, SIAM J. Numer. Anal., to appear.
5. Efficiently implementable algebraically stable Runge-Kutta methods;Burrage;SIAM J. Numer. Anal.,1982