A review last week at BMCR of a new-ish book on the Emperor Julian, specifically his Hymn to King Helios: Attilio Mastrocinque, Giuliano l'Apostata, Discorso su Helios re, Nordhausen: Verlag Traugott Bautz, 2011:
Attilio Mastrocinque here publishes the Italian translation and commentary of one of the most interesting writings by Emperor Julian, the Hymn to King Helios. Mastrocinque's work is particularly useful to historians of religion and philosophy of Late Antiquity since Julian's work is a theological treatise, composed on the occasion of the feast in honour of the Sun god—which was celebrated on December 25th—and aimed at defining the nature of this supreme god and his intervention in the world. The objectives of the commentary, stated in the brief Preface, are in the first place to highlight the "political purpose of Julian's cosmological and theological thought" (p. VIII), and secondly, to point out the effects of Julian's thought on the political organization of the empire.
Full review here.