1. Agterberg FP (1988) Quality of time scales – a statistical appraisal. In: Merriam DF (ed) Current trends in geomathematics. Plenum, New York
2. Agterberg FP (1990) Automated stratigraphic correlation. Elsevier, Amsterdam
3. Agterberg FP (1994) Estimation of the mesozoic geological time scale. Math Geol 26:857–876
4. Agterberg FP (2002) Construction of numerical geological time scales. Terra Nostra, April 2002, pp 227–232
5. Agterberg FP (2004) Geomathematics. In: Gradstein JM, Ogg JG, Smith AG (eds) A geologic time scale 2004. Cambridge University Press, Cambridge, pp 106–125 & Appendix 3, pp 485–486