1. The Givetian-Famennian at Oum El Jerane (Amessoui syncline, southern Tafilalt);R T Becker;lnternational Field Symposium "The Devonian and Lower Carboniferous of northern Gondwana,2013
2. 2013b. lnternational Field Symposium "The Devonian and Lower Carboniferous of northern Gondwana;R T Becker;Field Guidebook, Document de l'Institut Scientifique
3. Devonian conodont and ammonoid succession of the eastern Tafilalt (Ouidane Chebbi section);Z Belka;Morocco. Act. Geol. Polonica,1999