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This research was supported by the National Science Foundation through the Institute for Advanced Study and the University of Illinois.
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Grayson, D.R. Reduction theory using semistability. Commentarii Mathematici Helvetici 59, 600–634 (1984). https://doi.org/10.1007/BF02566369
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DOI: https://doi.org/10.1007/BF02566369