1. Paleogene geochronology and chronostratigraphy;Berggren,1985
2. Neogene geochronology and chronostratigraphy;Berggren,1985
3. Cenozoic Geochronology;Berggren;Bull. Geological Society of America,1985
4. Dating of the Palaeogene;Curry,1982
5. Use of bentonites and glauconites in potassium 40/argon 40 dating in Gulf Coast stratigraphy;Ghosh,1972