, 2013, Luhmann and Koselleck: conceptual history and the diagnostics of the present, in A. La Cour & A. Philippopoulos-Mihalopoulos (eds.), Luhmann observed, Basingstoke, Palgrave Macmillan, pp. 203-224.
, 2005a, Political administration, in D. R. Howarth & J. Torfing (eds.), Discourse theory in European politics, Basingstoke, Palgrave Macmillan, pp. 139-169.