@InProceedings{hamann12b,
  author =       "Heiko Hamann",
  title =        "Towards Swarm Calculus: Universal Properties of Swarm
                 Performance and Collective Decisions",
  booktitle =    "Swarm Intelligence: 8th International Conference, ANTS
                 2012",
  pages =     "168-179",
  year =         "2012",
  editor =       "Dorigo, Marco and Birattari, Mauro and Blum, Christian and Christensen, Anders Lyhne and Engelbrecht, Andries Petrus and Gro\ss{}, Roderich and St{\"u}tzle, Thomas",
  volume =    "7461",
  series =       "Lecture Notes in Computer Science",
  publisher =    "Springer",
  url =          "http://dx.doi.org/10.1007/978-3-642-32650-9_15"
}