1. Ahn, S.J., Rauh, W. and Recknagel, M. (1999), “Circular coded landmark for optical 3D‐measurement and robot vision”,Proceedings of the 1999 IEEE/RSJ International Conference on Intelligent Robots and Systems, Vol. 2, pp. 1128‐33.
2. Bahl, P. and Padmanabhan, V. (2000), “RADAR: an in‐building RF‐based user location and tracking system”,IEEE INFOCOM'02, Vol. 2, pp. 775‐84.
3. Becker, C., Salas, J., Tokusei, K. and Latombe, J.‐C. (1995), “Reliable navigation using landmarks”,Proceedings of IEEE International Conference on Robotics and Automation, pp. 401‐6.
4. Mobile robot navigation using self-similar landmarks
5. Landmark Design Using Projective Invariant for Mobile Robot Localization