, 2004, An historical approach to ontopoiesis of life and mind: The philosophy of J. c. smuts, in A. Tymieniecka (ed.), Does the world exist?, Dordrecht, Kluwer, pp. 809-820.
, 1999a, Complexity as the nodal point for a phenomenology of life, in A. Tymieniecka (ed.), Life scientific philosophy, phenomenology of life and the sciences of life, Dordrecht, Kluwer, pp. 233-247.