Scheidel, Walter (2015). A model of demographic and economic change in Roman Egypt after the Antonine plague. Journal of Roman Archaeology. 15: 97. doi:10.1017/S1047759400013854. S2CID160954017.
Scheidel, Walter (2015). A model of demographic and economic change in Roman Egypt after the Antonine plague. Journal of Roman Archaeology. 15: 97. doi:10.1017/S1047759400013854. S2CID160954017.