Ritchie, A., Halliday, S., Fernie, E., Macquarrie, A., Martin, C., Wickham-Jones, C., Driscoll, S., Nieke, M., & Cameron, N. (1987). Lecture summaries. Proceedings of the Society of Antiquaries of Scotland, 116, 583-592. https://doi.org/10.9750/PSAS.116.583.592