Authors Year Title
Aboussalam & Becker 2001 Prospects for an upper Givetian substage.
Mitteilungen des Museum für Naturkunde Berlin, Geowissinschaftliche Reihe, 4: 83-99, 3 text-figs., 3 pls., 2 tabls.
Aboussalam, Becker & Bockwinkel 2004 Givetian biostratigraphy and facies development at Oufrane.
(Aboussalam,Z.S., Becker,R.T., Bockwinkel,J. & Ebbighausen,V.)
Devonian Neritic-Pelagic correlation and events in the Dra Valley (Western Anti-Atlas, Morocco,  A. El Hassani, ed., Docum.Inst.Scient., 19: 53-59, 2 fig., 1 tab., Rabat.
Aboussalam & Becker 2004 Givetian stratigraphy and faunas at Tiguisselt (Tata region, Dra Valley, Morocco).
Devonian Neritic-Pelagic correlation and events in the Dra Valley (Western Anti-Atlas, Morocco,  A. El Hassani, ed., Docum.Inst.Scient., 19: 60-63, 1 fig.,1 tab., Rabat.
Becker, Aboussalam & Bockwinkel 2004 The Givetian and Frasnian at Oued Mzerreb (Tata region, eastern Dra Valley). - [T.R. Becker, S.Z.Aboussalam, J.Bockwinkel, V. Ebbighausen, A. El Hassani & H.Nübel]
Devonian Neritic-Pelagic correlation and events in the Dra Valley (Western Anti-Atlas, Morocco,  A. El Hassani, ed., Docum.Inst.Scient., 19: 29-43, 1 pl., 4 fig., 2 tab.,Rabat.
Becker, Aboussalam & Bockwinkel 2004 Upper Emsian stratigraphy at Rich Tamelougou near Torkoz (SW Dra Valley, Morocco.
[Becker,R.T., Aboussalam,Z.S., Bockwinkel,J., Ebbighausen,V., El Hassani,A. & Nübel,H.]
Devonian Neritic-Pelagic correlation and events in the Dra Valley (Western Anti-Atlas, Morocco,  A. El Hassani, ed., Docum.Inst.Scient., 19: 85-89, 1 pl., 1 fig., Rabat.
Becker, Hartenfels & Aboussalam 2013 The Devonian – Carboniferous boundary at lalla Mimouna (northern Maider) – a progress report
International Field Symposium “The Devonian and Lower Carboniferous of northern Gondwana” Field-Guidebook, Document de l’Institut Scientifique, Rabat N°27 - 2013Publisher: Institut Scientifique Rabat; Eds.: Ralph T. Becker, Ahmed El Hassani & Abdelfatah Tahiri; ISBN: 0251-4249, pp. 109-120.
Becker, El Hassani & Aboussalam 2018 The Devonian and Lower Carboniferous of the eastern Anti-Atlas: introduction to a “cephalopod paradise”
[BECKER, R.T., EL HASSANI, A., ABOUSSALAM, Z.S., HARTENFELS, S. & BAIDDER, L.].- Münstersche Forschungen zur Geologie und Paläontologie, 110: 145–157.