ΧΑΤΖΗΛΑΖΑΡΟΥ (Dimitris Th. CHATZILAZAROU) Δ. Θ. Alessandro Taddei, Hagia Sophia before Hagia Sophia. A Study of the Great Church of Constantinople from Its Origins to the Nika Revolt of 532. ΔελτίονΧΑΕ 2021, 41, 470-474.