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Browsing by Author "Chwa, Kyung-Yong"  

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      Guarding art galleries by guarding witnesses 

      Chwa, Kyung-Yong; Jo, Byung-Cheol; Knauer, Christian; Moet, Esther; Oostrum, René van; Shin, Chan-Su (2004)
      Let P be a simple polygon. We de ne a witness set W to be a set of points su h that if any (prospective) guard set G ...