Numerical solution of a nonlinear parabolic control problem by a reduced SQP method. - F.-S. Kupfer; Ekkehard W. Sachs (Comput. Optim. Appl., 1992)

An Infinite-Dimensional Convergence Theory for Reduced SQP Methods in Hilbert Space. - F.-S. Kupfer (SIAM J. Optim., 1996)