Abdun,d Muḥemmed Ḥilmi.rradyu n teqbaylit tesɛa yakan 20 d tedqiqin, acku tella tewwi amkan n rradyu n taɛrabt i d-xedmen i lmend ad simnen imawlan n iserdasen i yellan di Berlin i yettnaḍaḥen mgal aɛdaw.