@article{HMD-09,
  title = "{Illuminating the Past: State of the Art}",
  author = "Happa, Jassim and Mudge, Mark and Debattista, Kurt and Artusi, Alessandro and Gon\c{c}alves, Alexandrino and Chalmers, Alan",
  year = "2010",
  journal = "Virtual Reality",
  number = "3",
  pages = "155--182",
  publisher = "Springer London",
  volume = "14",
}