1. Al_Hussseini MI (2004) Pre-Unayzah unconformity, Saudi Arabia. GeoArabia Special Publication 3. Gulf PetroLink, Bahrain, pp 15–59
2. Al-Belushi JD, Glennie KW, Williams BPJ (1996) Permo-Carboniferous glaciogenic Al-Khlata Formation, Oman: a new hypothesis for origin of its glaciation. GeoArabia 1(3):389–404
3. Al-Laboun AA (1987) Unayzah Formation: a new Permo-Caboniferous unit in Saudi Arabia. AAPG Bull 71:29–38
4. Angiolini L, Crasquin-Soleau S, Platel J-P, Roger J, Vachard D, Vaslet D, Al-Husseini M (2004) Saiwan, Gharif and Khuff formations, Haushi–Huqf uplift, Oman. GeoArabia Special Publication 3, Gulf PetroLink, Bahrain, pp 149–183
5. Berthelin M, Broutin J, Kerb H, Crasquin-Soleau S, Platel J-P, Roger J (2003) The Oman Gharif mixed paleoflora: a useful tool for testing Permian Pangea reconstruction. Palaeogeogr Palaeoclimatol Palaeoecol 196:85–98