Michael Braun (2014). trustOptim: An R Package for Trust Region Optimization with Sparse Hessians. Journal of Statistical Software, 60(4), 1-16. URL http://www.jstatsoft.org/v60/i04/.

@Article{,
  title = {{trustOptim}: An {R} Package for Trust Region Optimization with Sparse Hessians},
  author = {Michael Braun},
  journal = {Journal of Statistical Software},
  year = {2014},
  volume = {60},
  number = {4},
  pages = {1--16},
  url = {https://www.jstatsoft.org/v60/i04/},
}