Hetman, C., B. Scott Smith, J. Robey, T. Nkotsi, M. Mohapi, and T. Mohapi. “Letšeng Diamond Mine, Lesotho: A Variant of Kimberley-Type Pyroclastic Kimberlite Emplacement”. International Kimberlite Conference: Extended Abstracts, vol. 11, Sept. 2017, doi:10.29173/ikc4014.