@inproceedings{HromkovičSchnitger2009,
  author    = {Juraj Hromkovič and Georg Schnitger},
  title     = {Ambiguity and communication},
  booktitle = {26th International Symposium on Theoretical Aspects of Computer Science STACS 2009},
  pages     = {553 -- 564},
  year      = {2009},
}