Weimar, Jason. “Taxation and Public Labour in Ancient Sabaʾ: An Examination of ḫrṣ Using the Leiden and Munich Minuscule Inscriptions”. Proceedings of the Seminar for Arabian Studies, vol. 50, no. 1, Aug. 2020, pp. 333-42, https://archaeopresspublishing.com/ojs/index.php/PSAS/article/view/254.