@article{li2000derivative,
  title     = {A derivative-free line search and global convergence of Broyden-like method for nonlinear equations},
  author    = {Li, Dong-Hui and Fukushima, Masao},
  journal   = {Optimization methods and software},
  volume    = {13},
  number    = {3},
  pages     = {181--201},
  year      = {2000},
  publisher = {Taylor \& Francis}
}

@article{la2006spectral,
  title   = {Spectral residual method without gradient information for solving large-scale nonlinear systems of equations},
  author  = {La Cruz, William and Mart{\'\i}nez, Jos{\'e} and Raydan, Marcos},
  journal = {Mathematics of computation},
  volume  = {75},
  number  = {255},
  pages   = {1429--1448},
  year    = {2006}
}
