I came across this excellent blog, Religions of the Ancient Mediterranean, by Philip A. Harland of Concordia University, Montreal. It is linked to his website, which contains the full text of several of his published articles.
Imperial Cults within Local Cultural Life: Associations in Roman Asia, Ancient History Bulletin / Zeitschrift für Alte Geschichte 17 (2003) 85-107, fits neatly into our current subject and has several references to Hadrian and Antinous. (also as PDF)