@InProceedings{yfh:a159,
   title = {Preconditioned low-order Newton methods},
   author = {Y. F. Hu and C. Storey},
   year = 1993,
   BookTitle = {Journal of Optimization Theory and Applications},
   att_url = {http://www2.research.att.com/areas/visualization/papers_videos/pdf/yfh-a159.pdf}
}