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2. “Socratic Suicide?”;Proceedings of the Aristotelian Society 83,1982
3. “Who Did Forbid Suicide at Phaedo 62b?”;Classical Quarterly 20,1970
4. The Greek Commentaries on Plato’s Phaedo;Olympiodorus,1976
5. “Greek Philosophers on Euthanasia and Suicide.”;Suicide and Euthanasia: Historical and Contemporary Themes,1989