Wunderlich, T., D. Wilken, E. Erkul, W. Rabbel, A. Vött, P. Fischer, H. Hadler, S. Ludwig, and M. Heinzelmann. “The harbour(s) of Ancient Ostia. Archaeogeophysical Prospection With Shear Wave Seismics, Geoelectrics, GPR and Vibracorings”. Archaeologia Polona, vol. 53, Jan. 2015, pp. 539-42, https://journals.iaepan.pl/apolona/article/view/396.