Stephan's areas of specialization include interdisciplinary archaeological research in the first and second millennia A.D., medieval settlement and landscape archaeology, urban topography and architectural history, renaissance material culture (especially ceramics, glass, and oven tiles), economic history (especially pottery, metallurgy and glass production), and archaeometry.
Ioannis Liritzis (Greek: Ιωάννης Λυριτζής; born 2 November 1953 in Delphi) is professor of physics in archaeology (archaeometry) and his field of specialization is the application of natural sciences to archaeology and cultural heritage.