Hawkesworth, C.J., N.W Rogers, P.W. Van Calsteren, M.A. Menzies, and D.L. Reid. 1982. “Nd- and Sr-Isotope Studies on Crustal Xenoliths from Southern Africa”. International Kimberlite Conference: Extended Abstracts 3 (September):236-36. https://doi.org/10.29173/ikc2338.