@article{Simpson_1961, title={The castles of Duffus, Rait, and Morton reconsidered}, volume={92}, url={http://journals.socantscot.org/index.php/psas/article/view/8571}, DOI={10.9750/PSAS.092.10.14}, journal={Proceedings of the Society of Antiquaries of Scotland}, author={Simpson, W}, year={1961}, month={Nov.}, pages={10-14} }