1. The geology and geochemisstry the Lower Ultramafic Unit of the Onverwacht group and a proposed new class of igneous rock;Viljoen;Spec. Publ. Geol. Soc. S. Africa,1969
2. On the significance of komatiite;Brooks;Geology,1974
3. Evidence for the composition of the primitive mantle and its products of partial melting from a study of the rocks of the Barberton Mountain Land;Viljoen;Spec. Publ. Geol. Soc. S. Africa,1969
4. Early Precambrian evidence of a primitive ocean crust and island nuclei of sodic granite;Glikson;Geol. Soc. Am. Bull.,1972
5. Crustal evolution and global tectonics: a petrogenetic view;Engel;Geol. Soc. Am. Bull.,1974