@inproceedings{Gueniat2013,
  title={Tangible windows for a free exploration of wide 3d virtual environment},
  author={Gu{\'e}niat, Florimond and Christophe, Julien and Gaffary, Yoren and Girard, Adrien and Ammi, Mehdi},
  booktitle={Proceedings of the 19th ACM Symposium on Virtual Reality Software and Technology},
  pages={115--118},
  year={2013},
  organization={ACM}
}