Broll, W.; Ohlenburg, J.; Lindt, I.; Herbst, I.; Braun, A. K. (2006). "Meeting technology challenges of pervasive augmented reality games". Proceedings of 5th ACM SIGCOMM workshop on Network and system support for games - NetGames '06. p.28. doi:10.1145/1230040.1230097. ISBN1595935894. S2CID15130951.
Broll, W.; Ohlenburg, J.; Lindt, I.; Herbst, I.; Braun, A. K. (2006). "Meeting technology challenges of pervasive augmented reality games". Proceedings of 5th ACM SIGCOMM workshop on Network and system support for games - NetGames '06. p.28. doi:10.1145/1230040.1230097. ISBN1595935894. S2CID15130951.