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Srv. L. M. de Rijk, Causality and Participation, in: E. P. Bos – P. A. Meijer (vyd.), On Proclus and his Influence in Medieval Philosophy, Leiden 1982, str. 1–34. K teorii kauzality a participace u Prokla viz R. Chlup, Proklos, str. 97 nn.