@Inproceedings{EPTCS59.3,
  author    = {Ciancia, Vincenzo},
  year      = {2011},
  title     = {Interaction and observation, categorically},
  editor    = {Silva, Alexandra and Bliudze, Simon and Bruni, Roberto and Carbone, Marco},
  booktitle = {{\rm Proceedings Fourth}
               Interaction and Concurrency Experience,
               {\rm Reykjavik, Iceland, 9th June 2011}},
  series    = {Electronic Proceedings in Theoretical Computer Science},
  volume    = {59},
  publisher = {Open Publishing Association},
  pages     = {25-36},
  doi       = {10.4204/EPTCS.59.3},
}