@article{DBLP:journals/vr/BillinghurstKKBP02,
  author    = {Mark Billinghurst and
               Hirokazu Kato and
               Kiyoshi Kiyokawa and
               Daniel Belcher and
               Ivan Poupyrev},
  title     = {Experiments with Face-To-Face Collaborative AR Interfaces},
  journal   = {Virtual Reality},
  volume    = {6},
  number    = {3},
  year      = {2002},
  pages     = {107-121},
  ee        = {http://dx.doi.org/10.1007/s100550200012},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}