References
Johann Hafner
Hermann Grassmann's theory of religion and faith
2011
in: From Past to Future: Graßmann's Work in Context, Dordrecht : Springer
In defense of a moth: The search for foundations of environmental ethics
2000
in: The origins of life II, Dordrecht : Kluwer
Is environmental ethics a collective egoism of mankind?
2000
in: Paideia, Dordrecht : Kluwer