Kopanias, Konstantinos, and Giota Barlagianni. 2019. “Unequal in Life But Equal in Death? The Mortuary Evidence for Social Stratification in the Ubaid Polities”. Ash-Sharq: Bulletin of the Ancient Near East – Archaeological, Historical and Societal Studies 3 (1):1-21. https://archaeopresspublishing.com/ojs/index.php/ash-sharq/article/view/711.