@article{Calder_1949, title={Notice of Two Standing Stones (one with Pictish Symbols) on the Lands of Peterhead Farm, near Gleneagles, Perthshire}, volume={81}, url={http://journals.socantscot.org/index.php/psas/article/view/8270}, DOI={10.9750/PSAS.081.1.7}, journal={Proceedings of the Society of Antiquaries of Scotland}, author={Calder, Charles}, year={1949}, month={Nov.}, pages={1-7} }