@Inproceedings{EPTCS1.9,
  author    = {Holzer, Markus and Kutrib, Martin and Malcher, Andreas},
  year      = {2009},
  title     = {Multi-Head Finite Automata: Characterizations, Concepts and Open Problems},
  editor    = {Neary, Turlough and Woods, Damien and Seda, Tony and Murphy, Niall},
  booktitle = {{\rm Proceedings International Workshop on}
               The Complexity of Simple Programs,
               {\rm Cork, Ireland, 6-7th December 2008}},
  series    = {Electronic Proceedings in Theoretical Computer Science},
  volume    = {1},
  publisher = {Open Publishing Association},
  pages     = {93-107},
  doi       = {10.4204/EPTCS.1.9},
}