An intelligent bulletin board system with real-time vision-based interaction using head pose estimation. Chang, C., Chung, P., Yeh, Y., & Yang, J. 1:1140-1143, 2006.
bibtex   
@Article{Chang_2006_136,
  author = {Chang, C.Y. and Chung, P.C. and Yeh, Y.S. and Yang, J.F.},
 pages = {1140-1143},
 title = {An intelligent bulletin board system with real-time vision-based interaction using head pose estimation},
 volume = {1},
 year = {2006},
 title_with_no_special_chars = {An Intelligent Bulletin Board System with Realtime Visionbased Interaction Using Head Pose Estimation}
}

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