@Article{SCI:Ber2003b,
  author =    "M. Berzins and A.G. Wilson",
  title =     "Spatial Interaction Models and Fisher Information
              Theory A New Calibration Model",
  journal =   "Environment and Planning",
  volume =    "35",
  pages =     "2161--2176",
  year =      "2003",
  url =       "http://www.sci.utah.edu/publications/berzins03/MBAGWFINALDRAFT.pdf",
}