1. 1982. From natural to reclaimed land. Land and water management in the polders of The Netherlands. Keynote International Symposium ?Polders of the World?. International Institute for Land Reclamation and Improvement: Wageningen, The Netherlands.
2. 1996. Man-made Lowlands. History of Water Management and Land Reclamation in the Netherlands, 3rd edn. Matrijs: Utrecht, The Netherlands.