New insights into the Trans-Saharan gold trade in the Islamic Middle Ages revealed by multi-isotopic (Pb–Fe–Cu) and elemental characterization of Fatimid gold coins - Louise de Palaminy; Sandrine Baron; Franck Poitrasson; Robert Kool; Maryse Blet-Lemarquand; François-Xavier Fauvelle (PLoS ONE, 2026)