Furstos, Cassandra, et al. “Long-Distance Trade in Al-‘Ūla from the Mamluk Period to the 20th Century AD: Technological, Morphological and Compositional Study of Glass Bangles Collected in Al-‘Ūla Oasis (Hejaz, Saudi Arabia)”. Proceedings of the Seminar for Arabian Studies, vol. 52, Jan. 2023, pp. 121-39, http://archaeopresspublishing.com/ojs/index.php/PSAS/article/view/1599.