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A Helly-type theorem for line transversals to disjoint unit balls Holmsen, Andreas F; Katchalski M; Lewis T, DISCRETE COMPUTATIONAL GEOMETRY, v.29, no.4, pp.595 - 602, 2003-06 |
The triples of geometric permutations for families of disjoint translates Asinowski A; Holmsen, Andreas F; Katchalski M, DISCRETE MATHEMATICS, v.241, no.1-3, pp.23 - 32, 2001-10 |
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