1. Ahmed, N.U., Teo, K.L.: Optimal Control of Distributed Parameter Systems. North Holland, New York (1981)
2. Augustin, D., Maurer, H.: Second order sufficient conditions and sensitivity analysis for optimal multiprocess control problems. Control Cybern. 29, 11–31 (2000)
3. Augustin, D., Maurer, H.: Computational sensitivity analysis for state constrained optimal control problems. Ann. Oper. Res. 101, 75–99 (2001)
4. Berkovitz, L.D.: Optimal Control Theory. Springer, New York (1974)
5. Cesari, L.: Existence theorems for optimal solutions in Pontryagin and Lagrange problems. SIAM J. Control 3, 475–498 (1966)