“Notes on the Ancient Cattle of Scotland: I. The Small Short-Horned Ox, Bos Longifrons, Owen; II. The Great Long-Horned Ox; The Urus, Bos Primigenius, Bojanus and Owen”. 1873. Proceedings of the Society of Antiquaries of Scotland 9 (November): 587-674. https://doi.org/10.9750/PSAS.009.587.674.