1. ; ; Stabilization of mechanical systems using controlled Lagrangians. Proc. IEEE Conf. Dec. Contr., 2356-2361. San Diego, Calif., 1997.
2. ; ; Matching and stabilization by the method of controlled Lagrangians. Proc. IEEE Conf. Dec. Contr., 1446-1451. Tampa, Fla., 1998.
3. ; ; Controlled Lagrangians and a stabilization of mechanical systems I: The first matching theorem. Preprint, 1999.
4. ; ; Potential shaping and the method of controlled Lagrangians. Preprint, 1999.
5. ; ; Stabilization of the pendulum on a rotor arm by the method of controlled Lagrangians. Proc. IEEE Int. Conf. on Robotics and Automation, 500-505. Detroit, Mich., 1999.