1. Rb–Sr determinations on South African kimberlite pipes;Allsopp;Physics and Chemistry of the Earth,1975
2. A summary of radiometric dating methods applicable to kimberlites and related rocks;Allsopp,1989
3. Rb–Sr and 40Ar/39Ar age determinations on phlogopite micas from the pre-Lebombo Group Dokolwayo kimberlite pipe;Allsopp,1984
4. The emplacement age and geochemical character of the Venetia kimberlite bodies, Limpopo Belt, northern Transvaal;Allsopp;South African Journal of Geology,1995
5. Phlogopites and potassic richterites from mica nodules in South African kimberlites;Aoki;Contributions to Mineralogy and Petrology,1974