@article{etna_vol16_pp186-193,
  author  = {Francisco Luengo and Marcos Raydan},
  title   = {Gradient method with dynamical retards for large-scale optimization problems},
  journal = {Electron. Trans. Numer. Anal.},
  volume  = {16},
  year    = {2003},
  pages   = {186--193},
}