Hagia Sophia and Topkapı Palace Subterranean I - Archaeological surveys at Cisterns and subterranean galleries of Hagia Sophia and Topkapı Palace Conference by Archaeologist Dr. Çiğdem Özkan Aygün-İstanbul Technical University and Ali Yamaç- ASPEG (Topkapı Palace Audience Hall – February 23, 2010)
Hagia Sophia and Topkapı Palace Subterranean III - Archaeological surveys at Cisterns and subterranean galleries of Hagia Sophia and Topkapı Palace Live Broadcast – NTV – Archaeologist Dr. Çiğdem Özkan Aygün and Prof. Dr. İlber Ortaylı