1. Ages of minerals from metamorphic and igneous rocks near Iron Mountain, Michigan;Aldrich;J. Petrol.,1965
2. The Precambrian banded iron-formations of the Soviet Union;Alexandrov;Econ. Geol.,1973
3. The pre-3760 m.y. old supracrustal rocks of the Isua area, central west Greenland, and the associated occurrence of quartz-banded ironstone;Allaart,1976
4. Dating some significant events in the history of the Swaziland System by the Rb-Sr isochron method;Allsopp;Can. J. Earth Sci.,1968
5. Chronotectonic boundaries for Precambrian time division in South America;de Almeida;Acad. Brazil Cienc. An.,1978