Barba, L. , Blancas, J. , Cappa, M. , Cura, M. , Crisci, G., De Angelis, D. , Miriello, D., Pecci, A. and Yavuz, H.B. 2015. Georadar study of early structures under the Hagia Sofia, Istanbul, Turkey. Archaeologia Polona. 53, (Jan. 2015), 248–251.