1. Lozano, R., Fantoni, I., and Block, D. J., ‘Stabilization on the inverted pendulum around its homoclinic orbit’, System & Control Letters (40) 3, 2000, 197–204.
2. Olfati-Saber, R., ‘Fixed point controllers and stabilization of the cart-pole and rotating pendulum’, in Proceedings of the 38th Conference on Decision and Control, Phoenix, AZ, December 7–10, 1999, pp. 1174–1181.
3. Bloch, A. M., Leonard, N. E., and Marsden, J. E., ‘Controlled lagrangians and the stabilization of mechanical systems: The first matching theorem’, IEEE Transactions on Systems and Control 45, 2001, 2253–2270.
4. Furuta, K., Yamakita, M., and Kobayashi, S., ‘Swing up control of inverted pendulum using pseudo-state feedback’, Journal of System and Control Engineering 206, 2001, 263–269.
5. Asrom, K. J. and Furuta, K., ‘Swinging up a pendulum by energy control’, Automatica 36(2), 2000, 287–295.