Brumm, A., Boivin, N., Korisettar, R., Koshy, J., & Whittaker, P. (2007). Stone axe technology in Neolithic south India: Evidence from the Sanganakallu-Kupgal area, mid-eastern Karnataka. Asian Perspectives, 46(1), 65-95. doi:10.1353/asi.2007.0004.