@article{comas05,
  title = "Competition and Cooperation Strategy in Multi-agent Systems",
  author = "Guo-xia Qiu and Zhi-yong Zhang and Jie Ma and Mao Li",
  year = "2005",
  journal = "Journal of Nanjing University of Science & Technology",
  pages = "22--25",
  volume = "29 (5A)",
}