@InProceedings{ByrdNoceWalt06,
  author = 	 {R. H. Byrd and J. Nocedal and R.A. Waltz},
  title = 	 {{KNITRO}: An integrated package for nonlinear
                  optimization},
  booktitle = 	 {Large-Scale Nonlinear Optimization},
  editor       = {G. di Pillo and M. Roma},
  publisher    = {Springer},
  pages        = {35--59}, year = 2006,
}