You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'ORDER BY issue DESC, `year` DESC ) QQ WHERE `year`<2100 ORDER BY modified DES...' at line 1 Bibliographies | Miko Flohr

Kamermans, H. and L.B. Van der Meer (2020). Designating Place. Archaeological Perspectives on Built Environments in Ostia and Pompeii. Archaeological Studies Leiden University 50. Leiden: Leiden University Press.
Stöger, H. (2011). Rethinking Ostia : a spatial enquiry into the urban society of Rome's imperial port-town. Archaeological Studies Leiden University 24. Leiden: Leiden University Press.