@Unpublished{daume04cg-bfgs,
  author =       {Hal {Daum\'e III}},
  title =        {Notes on {CG} and {LM-BFGS} Optimization of Logistic Regression},
  note =         {Paper available at \url{http://pub.hal3.name#daume04cg-bfgs}, implementation available at \url{http://hal3.name/megam/}},
  month =     {August},
  year =      {2004}
}