The Nonlinear Programming Method of Wilson, Han, and Powell with an Augmented Lagrangian Type Line Search Function. Part 2 : An Efficient Implementation with Linear Least Squares Subproblems. K. Schittkowski — 1982 Numerische Mathematik
The Nonlinear Programming Method of Wilson, Han, and Powell with an Augmented Lagrangian Type Line Search Function. Part 1 : Convergence Analysis. K. Schittkowski — 1982 Numerische Mathematik
A Factorization Method for the Solution of Constrained Linear Least Squares Problems Allowing Subsequent Data Changes. J. Stoer; K. Schittkowski Numerische Mathematik