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Oka Hirokazu; Miura Takeshi; Takahasi Sin-Ei: Semigroup operations which are distributive over a given semigroup operation on positive real numbers. In: Acta scientiarum mathematicarum, (86) 3-4. pp. 493-502. (2020)
Kawamura Kazuhiro; Koshimizu Hironao; Miura Takeshi: Norms on C1 ([0, 1]) and their isometries. In: Acta scientiarum mathematicarum, (84) 1-2. pp. 239-261. (2018)