Hasanuzzaman, Mohammad, Saifuddin Mohammad Tareeq, Tao Zhang, Vuthichai Ampornaramveth, Hironobu Gotoda, Yoshiaki Shirai, and Haruki Ueno. 2007. “Adaptive Visual Gesture Recognition for Human-Robot Interaction”. Malaysian Journal of Computer Science 20 (1):23-34. https://ijie.um.edu.my/index.php/MJCS/article/view/6292.