1. Andelfinger U. (1997) Diskursive Anforderungsanalyse (Frankfurt: Peter Lang, 1997).
2. Bickhard, M. H. (2000) ‘Emergence’, in P. B. Andersen, C. Emmeche, N. 0. Finnemann and P. V. Christiansen (eds), Downward Causation (Aarhus, Denmark: University of Aarhus Press, pp. 322–48.
3. Brandom, R. B. (1994) Making It Explicit. Reasoning, Representing, and Discursive Commitment (Cambridge, Mass.: Harvard University Press).
4. Campbell, R. L., Christopher, J. C. and Bickhard, M. H. (2002) ‘Self and Values. An Interactivist Foundation for Moral Development’, Theory and Psychology, vol. 12, no. 6, pp. 795–823.
5. Cassirer, E. (1993) ‘Zur Theorie des Begriffs. Bemerkungen zu dem Aufsatz von G. Heymans’, in R. A. Bast (ed.), E. Cassirer: Erkenntnis, Begriff, Kultur — Aufsatze Cassirers aus der Zeit von1913–1939 (Hamburg: Meiner), pp. 34–55.