References
Willem Beekman
Understanding nature as living: A challenge for academic education
1999
with Boersma Ruurdtje
in: Life scientific philosophy, phenomenology of life and the sciences of life, Dordrecht : Kluwer
Keeping phenomenologists informed since May 2002
1999
with Boersma Ruurdtje
in: Life scientific philosophy, phenomenology of life and the sciences of life, Dordrecht : Kluwer