(EN) Francesca Rochberg, Babylonian Astral Science in the Hellenistic World: Reception and Transmission (PDF), n. 4, München, Center for Advanced Study, Ludwig Maximilians Universität, 2010, p. 6. URL consultato il 14 luglio 2023 (archiviato dall'url originale il 13 agosto 2016).
«The ancient zodiac, however, began as a mathematical standard for calculating positions of celestial bodies»