1. Ventura F. 1999, Evaluating the Evidence for Interest in Astronomy in the Temple Period of Malta (3600–2500 BCE). Paper delivered at the second conference on the Inspiration of Astronomical Phenomena (INSAP II), Malta, January 1999.
2. Sims L. 2006, Lighting up Dark Moon: ethnographic templates for testing paired alignments on the Sun and the Moon. http://homepages.uel.ac.uk/L.D.Sims/Lighting%20Up%20Dark%20Moon.pdf