1. Quality of time scales – a statistical appraisal;Agterberg,1988
2. Estimation of the Mesozoic geological time scale;Agterberg;Mathematical Geology,1994
3. Construction of numerical geological time scales;Agterberg;Terra Nostra,2002
4. The Ordovician time scale – calibration of graptolite and conodont zones;Cooper;Acta Universitatis Carolinae Geologica,1999
5. Statistical analysis of geomagnetic reversal data and the precision of potassium-argon dating;Cox;Journal of Geophysical Research,1967