The archaeology, history and literature of the Greek, Roman and Byzantine worlds; political imagery in Greek art and drama, especially Aristophanes and Sophocles; the topography of classical and Byzantine cities, in particular Euesperides (Cyrenaica) and Thessaloniki; the recycling of ancient marble; the classical tradition in Renaissance and later sculpture and painting; the history of taste; ancient material values; metrology and mensuration; the archaeology of the Black Sea (especially Pichvnari in Georgia).