@article{Scott_Ritchie_2015, title={Pictish symbol stones and early cross-slabs from Orkney}, volume={144}, url={http://journals.socantscot.org/index.php/psas/article/view/9813}, DOI={10.9750/PSAS.144.169.204}, journal={Proceedings of the Society of Antiquaries of Scotland}, author={Scott, Ian and Ritchie, Anna}, year={2015}, month={Nov.}, pages={169-204} }