1. Dating some significant events in the history of the Swaziland System by the Rb-Sr isochron method;Allsopp;Can. J. Earth Sci.,1968
2. Graywacke with a primary matrix from the Viqueque Formation, Upper Miocene-Pliocene, Timor;Audley-Charles;J. Sediment. Petrol.,1967
3. Origin of matrix in Ordovician graywackes, Berwyn Hills, North Wales;Brenchley;J. Sediment. Petrol.,1969
4. Relationship between Ca/Mg ratio and geologic age;Chilingar;Bull. Am. Ass. Pet. Geol.,1956
5. Petrology and geochemistry of Early Precambrian graywackes from the Fig.Tree Group;Condie;Bull. Geol. Soc. Am.,1970