@phdthesis{ethos-3584,
  title = {Modelling the transition to complex, culturally transmitted communication},
  author = {Graham R. S. Ritchie},
  year = {2009},
  url = {http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.562369},
  note = {British Library, EThOS},
  researchr = {https://researchr.org/publication/ethos-3584},
  cites = {0},
  citedby = {0},
  school = {University of Edinburgh, UK},
}