@Article{SCI:Kea2005a,
  author =    "P.J. Keall and S. Joshi and S.S. Vedam and J.V.
              Siebers and V.R. Kini and R. Mohan",
  title =     "Four-Dimensional Radiotherapy Planning for
              DMLC-Based Respiratory Motion Tracking",
  journal =   "Med Phys",
  volume =    "32",
  number =    "4",
  pages =     "942--951",
  year =      "2005",
  month =     "April",
}