SmithTE03'

@article{DBLP:journals/alife/SmithTE03,
  author    = {Arnold Smith and
               Peter D. Turney and
               Robert Ewaschuk},
  title     = {Self-Replicating Machines in Continuous Space with Virtual
               Physics},
  journal   = {Artificial Life},
  volume    = {9},
  number    = {1},
  year      = {2003},
  pages     = {21-40},
  ee        = {http://dx.doi.org/10.1162/106454603321489509},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}