@Article{SCI:Guo2006a,
  author =    "Y. Guo and J.A. Nairn",
  title =     "Three-Dimensional Dynamic Fracture Analysis using
              the Material Point Method",
  journal =   "Computer Modeling in Engineering and Sciences",
  volume =    "1",
  number =    "1",
  pages =     "11--25",
  year =      "2006",
}