Windelband, Wilhelm
History of Ancient philosophy
Dover, 1956
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Armstrong, A.H.
An introduction to ancient philosophy
Newman Press, 1949
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Burnyeat, Myles F.
Explorations in ancient and modern philosophy
Cambridge University Press, 2012
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Oxford studies in ancient philosophy; Vol.III
edited by Julia Annas
Clarendon Press , 1985
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Callaban, John F.
Four views of time in ancient philosophy
Harvard University Press, 1948
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