1. Jonathan Wooding, ‘Trade as a Factor in the Transmission of Texts between Ireland and the Continent in the Sixth and Seventh Centuries’, in Proinseas Ní Chatháin and Michael Richter, eds, Ireland and Europe in the Early Middle Ages: Texts and Transmission (Dublin, 2002), pp. 14–26.
2. Aidan O’Sullivan, Finbar McCormick, Thomas R. Kerr and Lorcan Harney, Early Medieval Ireland AD 400–1100. The Evidence from Archaeological Excavations (Dublin, 2014)
3. Christopher Loveluck, Northwest Europe in the Early Middle ages, c. AD 600–1150. A Comparative Archaeology (Cambridge, 2013).
4. Christer Westerdahl, ‘The Maritime Cultural Landscape’, International Journal of Nautical Archaeology 21 (1992), pp. 5–14.
5. O’Sullivan et al. Early Medieval Ireland, and see also Wendy Davies, ‘Economic Change in Early Medieval Ireland: the Case for Growth’, Settimane 57 (2010), pp. 111–33.