Schneider, M. ., S. P. . Linzen, M. . Schiffler, A. . Wunschel, M. . Hein, C.-B. . Roettig, S. . Dunkel, R. . Stolz, P. . Ettel, H.-G. Meyer, and D. Baumgarten. “SQUID-Based Magnetic Prospection in Interdisciplinary Case Studies at Possible Early and High Medieval Harbour Sites in Germany”. Archaeologia Polona, vol. 53, Jan. 2015, pp. 368-72, https://journals.iaepan.pl/apolona/article/view/351.