1. Sony Aibo ERS-7: (2005),
http://www.aibo.com
2. The RoboCup Federation: In: Bredenfeld, A., Jacoff, A., Noda, I., Takahashi, Y. (eds.) RoboCup 2005. LNCS (LNAI), vol. 4020, Springer, Heidelberg (2006),
http://www.robocup.org
3. Lecture Notes in Artificial Intelligence;C. Kwok,2005
4. Lecture Notes in Artificial Intelligence;A. Ferrein,2006
5. Fox, D., Hightower, J., Liao, L., Schulz, D., Borriello, G.: Bayesian Filtering for Location Estimation. PERVASIVE computing, 10–19 (2003)