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      Finding a widest empty 1-corner corridor 

      Díaz Báñez, José Miguel; López, Mario A.; Sellarès Chiva, Joan Antoni (2004)
      Given a set of n points in the plane, we consider the problem of computing a widest empty 1-corner corridor. We star giving ...
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      The siphon problem 

      Díaz Báñez, José Miguel; Seara Ojea, Carlos; Ventura Molina, Inmaculada (2004)
      An α-siphon is the locus of points in the plane that are at the same distance ǫ from a polygonal chain consisting of two ...