Voudouris, P., I. Psimis, C. Mavrogonatos, C. Kanellopoulos, M. Kati, et E. Chlekou. 2013. « Amethyst Occurrences in Tertiary Volcanic Rocks of Greece: Mineralogical and Genetic Implications ». Bulletin of the Geological Society of Greece 47 (1):477-86. https://doi.org/10.12681/bgsg.11026.