Michael Wittkämper Anne-Kathrin Braun Iris Herbst Jan Herling A Distributed System for Augmented Reality Experiences in Science Centers and Museums. 936-946 2007 conf/edutainment/2007 Edutainment http://dx.doi.org/10.1007/978-3-540-73011-8_90 db/conf/edutainment/edutainment2007.html#WittkamperBHH07