D. Sonntag, and M. Möller. Proceedings of the Sixth International Conference on Intelligent Environments (IE 2010), Kuala Lumpur, Malaysia, page 84--89. Los Alamitos, CA, IEEE Computer Society CPS, (2010)
D. Kuettel, M. Breitenstein, L. Van Gool, and V. Ferrari. Proceedings of CVPR'10: IEEE Conference on Computer Vision and Pattern Recognition, San Francisco, CA, USA, page 1951-1958. (2010)