VAN DE VELDE, Thomas. Digging into the ʿUbaid period bitumen from Dosariyah. Proceedings of the Seminar for Arabian Studies, [S. l.], v. 45, p. 405–417, 2015. Disponível em: https://archaeopresspublishing.com/ojs/index.php/PSAS/article/view/1295. Acesso em: 21 feb. 2024.