Kummer’s lemma for ℤ p -extensions over totally real number fields Manabu Ozaki — 1997 Acta Arithmetica
On the Iwasaw ...-invariants of certain families of real quadratic fields. Manabu Ozaki; Hisao Taya — 1997 Manuscripta mathematica
A note on Greenberg's cojecture for real abelian number fields. Manabu Ozaki; Hisao Taya — 1995 Manuscripta mathematica