J. Vaganay, M. Aldon, and A. Fournier, “Mobile robot attitude estimation by fusion of inertial data,” in Proceedigns of the IEEE Internation Conference on Robotics and Automation ICRA, vol. 1, 1993, pp. 277- 282.
 E. Foxlin, M. Harrington, and Y. Altshuler, “Miniature 6-DOF inertial system for tracking HMD,” in Proceedings of the SPIE, vol. 3362, Orlando, Florida, 1998, pp. 214-228. [OpenAIRE]
 J. Balaram, “Kinematic observers for articulated robers,” in Proceddings of the IEEE International Conference on Robotics and Automation, 2000, pp. 2597-2604.
 J. L. Marins, X. Yun, E. R. Backmann, R. B. McGhee, and M. Zyda, “An extended kalman filter for quaternion-based orientation estimation using marg sensors,” in IEEE/RSJ International Conference on Intelligent Robots and Systems, 2001, pp. 2003-2011. [OpenAIRE]
 E. Lefferts, F. Markley, and M. Shuster, “Kalman filtering for spacecraft attitude estimation,” AIAA Journal of Guidance, Control and Navigation, vol. 5, no. 5, pp. 417-429, September 1982. [OpenAIRE]
 B. Barshan and H. Durrant-Whyte, “Inertial navigation systems for mobile robots,” IEEE Transactions on Robotics and Automation, vol. 44, no. 4, pp. 751-760, 1995. [OpenAIRE]
 M. Zimmerman and W. Sulzer, “High bandwidth orientation measurement and control ased on complementary filtering,” in Proceedings of Symposium on Roboitcs and Control, SYROCO, Vienna, Austria, 1991.
 A.-J. Baerveldt and R. Klang, “A low-cost and low-weight attitude estimation system for an autonomous helicopter,” Intelligent Engineering Systems, 1997.
 B. Vik and T. Fossen, “A nonlinear observer for gps and ins integration,” in Proceedings of teh IEEE Conference on Decisioin and Control, Orlando, Florida, USA, December 2001, pp. 2956-2961. [OpenAIRE]
 H. Rehbinder and X. Hu, “Nonlinear state estimation for rigid body motion with low-pass sensors,” Systems and Control Letters, vol. 40, no. 3, pp. 183-190, 2000. [OpenAIRE]
 E. R. Bachmann, J. L. Marins, M. J. Zyda, R. B. Mcghee, and X. Yun, “An extended kalman filter for quaternion-based orientation estimation using MARG sensors,” 2001. [OpenAIRE]
 J.-M. Pflimlin, T. Hamel, P. Soueeres, and N. Metni, “Nonlinear attitude and gyroscoples bias estimation for a VTOL UAV,” in Proceedings of the IFAC world congress, 2005.
 H. Rehbinder and X. Hu, “Drift-free attitude estimation for accelerated rigid bodies,” Automatica, 2004.
 N. Metni, J.-M. Pflimlin, T. Hamel, and P. Soueeres, “Attitude and gyro bias estimation for a flying UAV,” in IEEE/RSJ International Conference on Intelligent Robots and Systems, August 2005, pp. 295-301. [OpenAIRE]
 --, “Attitude and gyro bias estimation for a VTOL UAV,” in Control Engineering Practice, 2006, p. to appear.