Solving Theodorsen's Integral Equation for Conformai Maps with the Fast Fourier Transform and Various Nonlinear Iterative Methods. M.H. Gutknecht Numerische Mathematik
k-Step Iterative Methods for Solving Nonlinear Systems of Equations. W. Niethammer; M.H. Gutknecht — 1986 Numerische Mathematik
Modified Moments for Indefinite Weight Functions. Gene H:, Gutknecht, M.H. Golub — 1990 Numerische Mathematik