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↑3.03.1Östlin, A.; Vitos, L. (2011). "First-principles calculation of the structural stability of 6d transition metals". Physical Review B. 84 (11).Bircode,doi, 17/11/2018.Yín-yung chhâ-chho: 無效的<ref>標籤;name屬性“hcp”使用不同內容定義了多次