Cockburn, J. 1882. On an abnormality in the horns of the Hog-deer, Axis porcinus, with an amplification of the theory of the evolution of antlers in ruminants. (By John Cockburn, Offg. 2nd Asst. to Supdt. Indian Museum Calcutta).
Journal of the Royal Asiatic Society 51 (2): 44-49.