Trench-Jellicoe, Ross. “A Missing Figure on Slab Fragment No 2 from Monifieth, Angus, the a’Chill Cross, Canna, and Some Implications of the Development of a Variant Form of the Virgin’s Hairstyle and Dress in Early Medieval Scotland”. Proceedings of the Society of Antiquaries of Scotland, vol. 129, Nov. 2000, pp. 597-4, doi:10.9750/PSAS.129.597.647.