On the rank of the (2 ) -class group of ( mathbb {Q}( sqrt{p}, sqrt{q}, sqrt{-1} ) ). - Abdelmalek Azizi; Mohammed Taous; Abdelkader Zekhnini (Period. Math. Hung., 2014)

Capitulation of the 2-ideal classes of type (2, 2, 2) of some quartic cyclic number fields. - Abdelmalek Azizi; Idriss Jerrari; Abdelkader Zekhnini; Mohammed Talbi (J. Math. Cryptol., 2019)

On the maximal unramified pro-2-extension of certain cyclotomic $ mathbb {Z}_2$-extensions. - Abdelmalek Azizi; Mohammed Rezzougui; Abdelkader Zekhnini (Period. Math. Hung., 2021)