“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”, PSAS, vol. 9, pp. 587–674, Nov. 1873, doi: 10.9750/PSAS.009.587.674.