1. S. Nayar, Catadioptric vision, in: Proceedings of the Seventh International Symposium on Intelligent Robotic Systems, SIRS’99, Coimbra, Portugal 1999, pp. 1–11.
2. F. Ribeiro, C. Machado, S. Sampaio, B. Martins, Image processing applied to a robotic football team, in: G. Adorni, W. Van der Hoek (Eds.), Proceedings of the EuRoboCup 2000 Workshop, Amsterdam, 2000, on a CD-ROM.
3. R.A. Hicks, R. Bajcsy, Reflective surfaces as computational sensors, in: IEEE Workshop on Perception for Mobile Agents — Proceedings of the 1999 IEEE Conference on Computer Vision and Pattern Recognition, CVPR’99, IEEE Computer Press, Piscataway, NJ, 1999.
4. F.M. Marchese, D.G. Sorrenti, Omni-directional vision with a multi-part mirror, in: P. Stone, T. Balch, G. Kraetzschmar (Eds.), RoboCup 2000 — Robot Soccer World Cup IV, Springer, Berlin, 2001.
5. Real-time omni-directional image sensor (copis) for vision-guided navigation;Yagi;IEEE Transactions on Robotics and Automation,1994