@article{Somerville_1988, title={The ancient sundials of Scotland}, volume={117}, url={http://journals.socantscot.org/index.php/psas/article/view/9308}, DOI={10.9750/PSAS.117.233.264}, journal={Proceedings of the Society of Antiquaries of Scotland}, author={Somerville, Andrew}, year={1988}, month={Nov.}, pages={233-264} }