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Valk, H., Pluskowski, Aleks, Thornley, David, Brown, Alexander and Summerfield, C. (2009) Fluxgate gradiometry survey in the ruins of Karski Castle and palaeoenvironmental analysis in its hinterlands. Archaeological Fieldwork in Estonia. pp. 213-229.

Falck, W E, Read, D, Black, Stuart, Thornley, David, Markovaara-Koivisto, M and Siitari-Kauppi, M (2008) Understanding uranium migration in hard rocks. In: Merkel, B. J. and Hasche-Berger, A. (eds.) Uranium, mining and hydrogeology. Springer, pp. 19-26. ISBN 9783540877455 doi: https://doi.org/10.1007/978-3-540-87746-2_3