Elena Ene D-Vasilescu & Mark (University of Oxford, UK) Edwards 
Visions of God and Ideas on Deification in Patristic Thought [PDF ebook] 

This volume illustrates the complexity and variety of early Christian thought on the subject of the image of God as a theological concept, and the difficulties that arise even in the interpretation of particular authors who gave a cardinal place to the image of God in their expositions of Christian doctrine. The first part illustrates both the presence and the absence of the image of God in the earliest Christian literature; the second examines various studies in deification, both implicit and explicit; the third explores the relation between iconography and the theological notion of the image