1. Blumenthal, Henry J.: Plotinus’ Psychology. His Doctrines of the Embodied Soul. Den Haag 1971.
2. Blumenthal, Henry J.: Nous and Soul in Plotinus: Some Problems of Demarcation. In: Atti del Convegno internazionale sul tema: Plotino e il Neoplatonismo in Oriente e in Occidente (Roma 1970). Rom 1974, 203–219.
3. Caluori, Damian: Was fühlt der Leib? Was empfindet die Seele? In: Hilge Landweer/Ursula Renz (Hg.): Klassische Emotionstheorien. Von Platon bis Wittgenstein. Berlin/New York 2008, 121–140.
4. Caluori, Damian: Plotinus on the Soul. Cambridge 2015 [Caluori 2015a].
5. Caluori, Damian: Divine Practical Thought in Plotinus. In: Documenti e studi sulla tradizione filosofica medievale 26 (2015), 5–77 [Caluori 2015b].