A number of other minor works or fragments of works survive. A number of major commentaries have been lost. The "Liber de Causis" (Book of Causes) is not a work by Proclus, but a summary of his work the "Elements of Theology", likely written by an Arabic interpreter. It was mistakenly thought in the Middle Ages to be a work of Aristotle, but was recognised by Aquinas not to be so. A list of modern editions and translations of his surviving works is available at:  Monographs  Collections of essays  Studies on particular aspects of Proclus' philosophy  Bibliographic resources