Parunak, H.V.D.; Brueckner, W.; Savit, R. (2004), Universality in Multi-Agent Systems(PDF), pp. 930–937, archived from the original(PDF) on 16 August 2012, retrieved 2 February 2018{{citation}}: Unknown parameter |conference= ignored (help)
Parunak, H.V.D.; Brueckner, W.; Savit, R. (2004), Universality in Multi-Agent Systems(PDF), pp. 930–937, archived from the original(PDF) on 16 August 2012, retrieved 2 February 2018{{citation}}: Unknown parameter |conference= ignored (help)