O’Brien, Carl (2021) Platonic Dialogues and Platonic Principles. The International Journal of the Platonic Tradition, 15 (1). pp. 90-98. ISSN 1872-5082
O’Brien, Carl (2020) Jens Halfwassen, 1958-2020. The International Journal of the Platonic Tradition, 14 (2). pp. 117-119. ISSN 1872-5082