1. For descriptions of insular script, see: Bernhard Bischoff, Latin Palaeography. Antiquity and the Middle Ages (Cambridge 1990), pp. 83–90;
2. T.J. Brown, A Palaeographer’s View. The Selected Writings of Julian Brown, eds Janet Bately, et al. (London, 1993);
3. David N. Dumville, A Palaeographer’s Review: The Insular System of Scripts in the Early Middle Ages (Osaka, 1999), pp. 5–8.
4. For a discussion of the wedge and its origins, see Gifford Charles-Edwards, ‘The Springmount Bog Tablets: their Implications for Insular Epigraphy and Palaeography’, Studia Celtica 36 (2002), pp. 27–45, at pp. 30–1.
5. W. M. Lindsay, Notae Latinae. An Account of Abbreviation in Latin MSS. of the Early Minuscule Period (c. 700–850) (Cambridge, 1915); with Supplement by D. Bains (Cambridge,1936).