Amemiya Ichiro; Ando Tadao: Convergence of random products of contractions in Hilbert space. In: Acta scientiarum mathematicarum, (26) 3-4. pp. 239-244. (1965)
Amemiya Ichiro; Halperin Israel: Complemented modular lattices derived from non-associative rings. In: Acta scientiarum mathematicarum, (20). pp. 181-201. (1959)