On Newton-like Iteration Functions: General Convergence Theorems and a Specific Algorithm. K.M. BROWN; J.E. JR. DENNIS — 1968 Numerische Mathematik
Derivative Free Analogues of the Levenberg-Marquardt and Gauss Algorithms for Nonlinear Least Squares Approximation. K.M. Brown; J.E. jr. Dennis Numerische Mathematik