@article{Duns_1880, title={Note on ’Trotter Roofing.’}, volume={14}, url={http://journals.socantscot.org/index.php/psas/article/view/5915}, DOI={10.9750/PSAS.014.180.181}, journal={Proceedings of the Society of Antiquaries of Scotland}, author={Duns, Professor}, year={1880}, month={Nov.}, pages={180-181} }