@InProceedings{tzafestas-2000a,
  author         = {E. Tzafestas},
  title          = {Toward adaptive cooperative behavior},
  year           = {2000},
  volume         = {2},
  booktitle      = {From Animals to animals: Proceedings of the 6th International Conference on the Simulation of Adaptive Behavior (SAB-2000)},
  month          = {Sep},
  pages          = {334--340},
  key            = {tzafestas-2000a}
}