1. Bradley, C.; Haynes, R.; Boyle, T.(2005): AdultMultimedia Learning with PDAs -The User Experience. In: 4th World Conference on mLearning: mLearn2005.
2. Chang, A.; Chang, M.; Hsieh, A.(2006): A Treasure Hunting Learning Model for Students Studying History and Culture in the Field with Cellphone. In: ICALT ’06: Proceedings of the Sixth IEEE International Conference on Advanced Learning Technologies.
3. Cheverest, K.; Davies, N.; Mitchell, K.; Friday, A.; Efstratiou,C. (2000): Developing a context-aware electronic tourist guide: some issues and experiences. In: Proceedings of the SIGCHI conference on Human factors in computing systems
4. Chen, Y.S.; Kao, T.C.; Yy, G.J.; Sheu, J.P. (2004a): A mobile butterfly-watching learning system for supporting independent learning. In: Proceedings of the 2nd IEEE International Workshop on Wireless and Mobile Technologies in Education.
5. Crom, E.P. de; Jager, A. de: The MELearning Experience (2005): PDA Technology and E-Learning in Ecotourism at the Tshwane University of Technology (TUT). In: 4th World Conference on mLearning: mLearn2005.