Smith JA. Notes of oblong and horse-shoe shaped flint implements and Arrow-heads found in Kincardineshire. Also Note of the Use of a Stone as a Knife, in the Island of Lewis in 1829. PSAS [Internet]. 1876 Nov. 30 [cited 2024 May 2];11:575-80. Available from: https://journals.socantscot.org/index.php/psas/article/view/5772