Reading Plotinus: A Practical Introduction to Neoplatonism
Kevin Corrigan
Bertier, J. (et al.) (1980) Plotin. Traite 'Sur les Nombres' (Enneads VI, 6 [34]), Paris . Blumenthal, H. J. (1968). "Plotinus, Ennead IV, 3, 20-1 and Its Sources: Alexander, Aristotle, and Others," Archiv fur Geschichte der Philosophie 50, 254- 6 1 .