Sims, Lionel. “A Commentary on L. V. Morrison, ‘On the Analysis of Megalithic Lunar Sightlines in Scotland’, Archaeoastronomy, Supplement of the Journal for the History of Astronomy, 1980, 2: 65–77”. Journal of Skyscape Archaeology, vol. 5, no. 1, Aug. 2019, pp. 79-89, https://doi.org/10.1558/jsa.38837.