, 2002, The natural-scientific and phenomenological approaches to animals, in A. Tymieniecka (ed.), Life - energies, forces and the shaping of life, Dordrecht, Kluwer, pp. 101-115.
, 1999a, A hermeneutical ethology?, in O. Kiss (ed.), Hermeneutics and science, Dordrecht, Springer, pp. 199-205.