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Wiedemann, A. A remark on the structure of the Auslander-Reiten quiver of orders, blocks with cyclic defect two and the Dynkin diagram\(\mathbb{E}_6 \) . Arch. Math 45, 211–218 (1985). https://doi.org/10.1007/BF01275571
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DOI: https://doi.org/10.1007/BF01275571