@article{secondorderswarmintelligence,
  title = {Second Order Swarm Intelligence},
  author = {Vitorino Ramos and David M. S. Rodrigues and Jorge Louçã},
  year = {2013},
  eprint = {1306.3018},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1306.3018v1},
}