Matrix Secant and Variable Metric Methods for Monotone Operators

• On the super--linear convergence of the variable metric proximal point algorithm using Broyden and BFGS matrix secant updating,
  with M. Qian, Mathematical Programming, 88(2000), 157--181.
• The variable metric proximal point algorithm for monotone operators,
  with M. Qian, SIAM J. Control and Optimization, 37 (1999), 353--375.
• On the local super-linear convergence of a matrix secant implementation of the variable metric proximal point algorithm for monotone operators,
  with M. Qian, Reformulation-- Nonsmooth, Piecewise Smooth, Semi--smooth, and Smoothing Methods, Editors: Liqun Qi and Masao Fukushima, Kluwer Academic Publishers, 1998, pp. 317--334.