Citation: Sakakura, Terutoshi; Tanaka, Kiyoaki; Takenaka, Yasuyuki; Matsuishi, Satoru; Hosono, Hideo; Kishimoto, Shunji (2011). Determination of the local structure of a cage with an oxygen ion in Ca~12~Al~14~O~33~. Acta Crystallographica Section B, 67, pp. 193-204.