1. The subsurface stratigraphy of pre-Khuff formations in central and northwestern Arabia;Al-Laboun,1982
2. Stratigraphy and hydrocarbon potential of the Paleozoic succession in both Tabuk and Widyan basins, Arabia;Al-Laboun,1986
3. A stratigraphic contribution to the Palaeozoic of the southern basins of Libya;Bellini,1980
4. Sedimentology and mineralisation potential of the Saq and Tabuk formations: Qassim District;Clark-Lowes;Open File Report of the Saudi Arabian Cover Rock Project, Imperial College of Science and Technology, London CRC/IC 7 and Open File Report of the Saudi Arabian Directorate General of Mineral Resources DGMR-767,1980