@article{rivas2014nonlinear,
  title={A nonlinear least squares quasi-Newton strategy for LP-SVR hyper-parameters selection},
  author={Rivas-Perea, Pablo and Cota-Ruiz, Juan and Rosiles, Jose-Gerardo},
  journal={International Journal of Machine Learning and Cybernetics},
  volume={5},
  number={4},
  pages={579--597},
  year={2014},
  publisher={Springer}
}