The Github page for modern Minpack () provides the following citation for the non-linear solver (hybrd
) in the package:
- M. J. D. Powell, A Hybrid Method for Nonlinear Equations. Numerical Methods for Nonlinear Algebraic Equations, P. Rabinowitz, editor. Gordon and Breach, 1970.
But I can’t find the article anywhere (my universities library, google, etc.). Does anyone know of where I can find a good description of Powell’s hybrid method for nonlinear equations?