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Forgetful polygons as generalizations of semi-affine planes
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Distance-preserving maps in generalized polygons, part I : maps on flags
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Two characterizations of the Hermitian spread in the split Cayley hexagon
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Two Remarks on Generalized Hexagons
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Some Combinatorial and Geometric Characterizations of the Finite Dual Classical Generalized Hexagons
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A combinatorial characterization of some finite classical generalized hexagons