Groves, Colin P. “A Note on Geographic Variation in the Indian Blackbuck (<i>Antilope cervicapra< I> Linnaeus, 1758)”. Records of the Zoological Survey of India, vol. 79, no. 3-4, Dec. 1981, pp. 489-03, doi:10.26515/rzsi/v79/i3-4/1981/161746.