1. Weiser, M., “Some computer science Problems in ubiquitous computing,” Communications of ACM, Vol. 36, No.7, pp. 75–84, Jul, 1993
2. Weiser, M., http://www.ubiq.com/hypertext/weiser/UbiHome.html
3. Weiser, M., “The computer for the 21st century,” Scientific American, Vol. 265, No. 3, pp. 94–104, Sep., 1991.
4. Kim, J.-H, “IT-based UbiBot,” (theme special lecture), The Korea Electronic Times, May 13, 2003
5. Kim, Y.-D. and Kim, J.-H., “Implementation of Artificial Creature based on Interactive Learning,” FIRA Robot World Congress, pp. 369–374, May 2002.