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2. Krejci, P., Vlach, R., Grepl, R.: Contact sensor for robotic applications—verification of Functionality. In: Conference Proceedings: “Engineering Mechanics 2006”, pp. 182–183, Svratka, Czech Republic, May (2006). ISBN 80-86246-27-2
3. Ion, I.: Walking Robots Editura BREN. In Romanian (2001). ISBN 973-8143-80-2
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