@Article{  hamann13,
  author =       "Heiko Hamann and Istvan Karsai and Thomas Schmickl",
  title =        "Time delay implies cost on task switching: {A} model
                 to investigate the efficiency of task partitioning",
  journal =      "Bulletin of Mathematical Biology",
  year =         "2013",
  volume =    "75",
  number =    "7",
  pages =     "1181-1206",
  month =     "July",
}