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Oblatum 26-V-1992 & 31-VIII-1992 & 7-XII-1992
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Broer, B. Line bundles on the cotangent bundle of the flag variety. Invent Math 113, 1–20 (1993). https://doi.org/10.1007/BF01244299
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DOI: https://doi.org/10.1007/BF01244299