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Double crosses, Circa 2012
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28 Octagonal variants, Circa 2010
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Hidden circles, Circa 2006
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Tree sequence, circa 2002
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Drawing 48, circa 2000
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White relief 2, circa 1975
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Untitled, 2017
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Hexagonal sequences, 2015-16
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Transformable relief, 2014
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Decagons on blue, 2013
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Transformable construction, 2013
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Integration of 3 colours on blue background, 2012
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Triangles in a dodecagon, 2001-04
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Drawing 49, 2000
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Drawing 56, 2000
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10 acute triangles, version 'A', 1994
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Grey relief 3, 1994
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Meander, 1990-5
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Grey relief, 1982
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Drawing: Volume & Void, 1981
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Colour sequence, 1979
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Grey relief 2, 1977
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Untitled, 1973
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Volume & Void, 1973
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Construction based on 7, 1969
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Drawing for interlocking squares, 1969
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Four rows on four levels, 1969
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Two elements, 1969
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Rotation of 2 layers, 1968
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Constructed perspex relief, 1966
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Structural relief, 1966
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No 16A, 1965
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White Relief, 1964-2015
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Helix of 9 slices of cube