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2003년 한국정밀공학회 춘계학술대회, page. 321 - 324, 2003-06-12
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International Conference on Robotics and Automation, page. 1 - 6, 1999-05-10
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International Conference on Robotics and Automation, page. 227 - 232, 1997-07-07
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International Federation of Automatic Control Workshop on Mobile Robot Technology, page. 250 - 255, 2001-05-19
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International Symposium on Automation and Robotics in Construction, 2004-09-22
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International Conference on Robotics and Automation, page. 1080 - 1087, 1997-04-20
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