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Yeoman, P.; Boardman, S.; Carter, S.; Cundhill, P.; Cuthbert, K.; Davidson, D.; Finlayson, B.; Ford, B.; Gabra-Sanders, T.; Gallagher, D.; Hamilton-Dyer, S.; Máté, I.; McCormick, F.; Holmes, N. M. M.; Spearman, M.; Will, R. Excavations at Castle of Wardhouse, Aberdeenshire. PSAS 1999, 128, 581-617.