@Article{SCI:Wal1999a,
  author =    "H.F. Walker",
  title =     "An Adaptation of Krylov Subspace Methods to Path
              Following Problems",
  journal =   "SIAM journal on scientific computing",
  volume =    "21",
  number =    "3",
  pages =     "1191--1198",
  year =      "1999",
  url =       "http://www.sci.utah.edu/publications/Wal1999a/1999_Walker_Path_Following_Problems.pdf",
}