1. Briechle, K., Hanebeck, U.D.: Localization of a mobile robot using relative bearing measurements. IEEE Transactions on Robotics and Automation 20(1), 36–44 (2004)
2. Butler, Z., Corke, P., Peterson, R., Rus, D.: From animals to robots: virtual fences for controlling cattle. In: International Symposium on Experimental Robotics, New Orleans, pp. 4429–4436 (2004)
3. Castelnovi, M., Sgorbissa, A., Zaccaria, R.: Markov-localization through color features comparison. In: Proceedings of the 2004 IEEE International Symposium on Intelligent Control, pp. 437–442 (2004)
4. Deans, M., Hebert, M.: Experimental comparison of techniques for localization and mapping using a bearings only sensor. In: Proc. of the ISER 2000 Seventh International Symposium on Experimental Robotics, pp. 395–404. Springer, Heidelberg (2000)
5. Deffenbaugh, M., Bellingham, J.G., Schmidt, H.: The relationship between spherical and hyperbolic positioning. In: OCEANS 1996. MTS/IEEE. Prospects for the 21st Century. Conference Proceedings, vol. 2, pp. 590–595 (1996)