Badel, Émilie, and Prof. Ulrich Kramm. 2014. “Mineralogical Investigations of Raʾs Al Jinz 2 Bitumen (Jaʿalān, Sultanate of Oman)”. Proceedings of the Seminar for Arabian Studies 44 (September):25-35. https://archaeopresspublishing.com/ojs/index.php/PSAS/article/view/1373.