Normal integral basis of an unramified quadratic extension over a cyclotomic ${\mathbb{Z}}_2$-extension

Ichimura, Humio; Sumida-Takahashi, Hiroki

Journal de théorie des nombres de Bordeaux, Volume 28 (2016) p. 325-345

Hilbert-Speiser number fields and Stickelberger ideals

Ichimura, Humio

Journal de théorie des nombres de Bordeaux, Volume 21 (2009) p. 589-607

On the ring of $p$-integers of a cyclic $p$-extension over a number field

Ichimura, Humio

Journal de théorie des nombres de Bordeaux, Volume 17 (2005) p. 779-786