1. Barczak, A.L.C., Dadgostar, F.: Real-time hand tracking using a set of co-operative classifiers based on haar-like features. Res. Lett. Inf. Math. Sci. 7, 29–42 (2005)
2. Bradski, G.: The OpenCV Library. Dr. Dobb’s Journal of Software Tools, 120–126 (November 2000)
3. Bradski, G.R.: Computer vision face tracking for use in a perceptual user interface. Intel Technology Journal (1998)
4. Dautenhahn, K.: Robots as social actors: Aurora and the case of autism. In: Proc. Cognitive Technology Conference, pp. 359–374 (1999)
5. Dautenhahn, K., Werry, I.: Issues of robot-human interaction dynamics in the rehabilitation of children with autism. In: Proc. International Conference on the Simulation of Adaptive Behavior, pp. 519–528 (2000)