Zotti, Georg. “‘Harmony and Symmetry’. European Society for Astronomy in Culture (SEAC) 26, Graz 27th August–1st September 2018”. Journal of Skyscape Archaeology 5, no. 1 (August 15, 2019): 95-98. Accessed February 27, 2020. http://journal.equinoxpub.com/JSA/article/view/12241.