• On Legal Formalism: the Principle of Legality in Criminal law, L’interprétation constitutionnelle, Dalloz, 2005, pp.61-82 (Round-Table of the Association internationale de droit constitutionnel organised on 15 and 16 October 2004 in Bordeaux,)
II/III, Berghahn Books, pp. 156-170, 2006