F.  Lorussi, Marigo, A., and Bicchi, A., ?Optimal exploratory paths for a mobile rover?, in Proc. IEEE Int. Conf. on Robotics and Automation, 2001, pp. 2078-2083. 

A.  Bicchi, Conticelli, F., and Prattichizzo, D., ?Localization Of Vehicles By Sensory Information?, in Proc. WAC Int. Symp. on Robotics and Applications, 2000, pp. 68-73. 

F.  Conticelli, Bicchi, A., and Balestrino, A., ?Observability and nonlinear observers for mobile robot localization?, in IFAC Int. Symp. on Robot Control, SyRoCo 2000, 2000. 

F.  Conticelli and Bicchi, A., ?Observer Design for Locally Observable Analytic Systems: Convergence, Separation Property, and Redundancy?, in Nonlinear Control in the Year 2000, vol. 258, A.  Isidori, Lamnabhi-Lagarrigue, F. F., and Respondek, W., Eds. Berlin Heidelberg, Germany: Springer-Verlag, 2000, pp. 315-330. 

A.  Bicchi, Prattichizzo, D., Marigo, A., and Balestrino, A., ?On the observability of mobile vehicles localization?, in Proc. IEEE Mediterranean Conf. On Control And Systems, 1998.