1. Abowd G. D., Mynatt E. D.: Charting Past, Present and Future Research in Ubiquitous Computing, ACM Transactions on Computer-Human Interaction, Special Issue on HCI in the new Millennium, Vol. 7, No. 1, March 2000, 29–58
2. Bey C., Freeman E., Mulder D., Ostrem J.: Palm OS SDK Reference, 3Com, http://www.palm.com/devzone/index.html , Jan. 2000
3. Boling D.: Programming Windows CE, Microsoft Press, 1998
4. Brors D.: Software Highlights für Palm-Rechner, C’T Vol. 7, Apr. 2000, 138–141
5. C-Technologies, ARIPOS Programming, http://www.cpen.com