International Conference on Robotics and Automation, page. 2358 - 2364, 1997-04-20
American Control Conference, page. 1395 - 1400, 2002-05-08
International Symposium on Artificical Life and Robotics, page. 402 - 405, 2000-02-01
제어로봇시스템학회지, vol. 8, no. 8, page. 655 - 664, 2002-01
제어로봇시스템학회지, vol. 10, no. 10, page. 855 - 868, 2004-01