A comparative performance evaluation of 27 nonlinear programming codes. - W. Hock; Klaus Schittkowski (Computing, 1983)

Algorithm 746: PCOMP: A Fortran Code for Automatic Differentiation. - M. Dobmann; Michael Liepelt; Klaus Schittkowski (ACM Trans. Math. Softw., 1995)

Optimal Control of One-Dimensional Partial Differential Algebraic Equations with Applications. - Markus Blatt; Klaus Schittkowski (Ann. Oper. Res., 2000)

Remark on algorithm 746: new features of PCOMP, a Fortran code for automatic differentiation. - Michael Liepelt; Klaus Schittkowski (ACM Trans. Math. Softw., 2000)

Nonlinear Programming: Algorithms, Software, and Applications - From Small to Very Large Scale Optimization. - Klaus Schittkowski; Christian Zillober (System Modelling and Optimization, 2003)

Very large scale optimization by sequential convex programming. - Christian Zillober; Klaus Schittkowski; K. Moritzen (Optim. Methods Softw., 2004)

A trust region SQP algorithm for mixed-integer nonlinear programming. - Oliver Exler; Klaus Schittkowski (Optim. Lett., 2007)

Parameter identification and model verification in systems of partial differential equations applied to transdermal drug delivery. - Klaus Schittkowski (Math. Comput. Simul., 2008)

Foreword. - Jose Herskovits Norman; Klaus Schittkowski (Optim. Methods Softw., 2010)

A robust implementation of a sequential quadratic programming algorithm with successive error restoration. - Klaus Schittkowski (Optim. Lett., 2011)

A comparative study of SQP-type algorithms for nonlinear and nonconvex mixed-integer optimization. - Oliver Exler; Thomas Lehmann 003; Klaus Schittkowski (Math. Program. Comput., 2012)

A combined SQP-IPM algorithm for solving large-scale nonlinear optimization problems. - Björn Sachsenberg; Klaus Schittkowski (Optim. Lett., 2015)