Otto Bardenhewer, Die pseudo-aristotelische Schrift ueber das reine Gute bekannt unter dem Namen Liber de Causis: Arabic text, German translation
Otto Bardenhewer (Kirchenlexikon, IX, 1905, coll. 706-10) is doubtful about it; Ehrhard (in Krumbacher's "Byzantin. Litter.", 132) says: "The name Oecumenius represents in the present state of investigation a riddle that can be solved only by thorough critical study of the manuscripts in connexion with the whole question of the Catenae."
Otto Bardenhewer, Patrology: The Lives and Works of the Fathers of the Church; translated from the second edition by Thomas J. Shahan.
Otto von Bismarck | Otto | Otto III | Otto Piene | Otto I, Holy Roman Emperor | Otto I | Otto Preminger | Otto II | Otto Dix | Otto Natzler | Otto II, Holy Roman Emperor | Otto Binder | Otto Skorzeny | Otto Schenk | Otto of Brunswick | Otto Kerner, Jr. | Otto Steinbrinck | Otto Kerner | Otto IV, Holy Roman Emperor | Otto IV | Otto III, Holy Roman Emperor | Otto Braun | Miranda Otto | Frei Otto | Otto-Werner Mueller | Otto Schmidt | Otto Muehl | Otto Lilienthal | Otto Klemperer | Otto Hermann Kahn |