[7] Bruno Van Pottelsberghe de la Potterie and Didier François, The Cost Factor in Patent Systems, werkdocument van de Vrije Universiteit Brussel WP-CEB 06-002, Brussel 2006, blz. 17 e.v.
[7] Bruno Van Pottelsberghe de la Potterie und Didier François, The Cost Factor in Patent Systems, Université Libre de Bruxelles Working Paper WP-CEB 06-002, Brüssel 2006, vgl. S.17 ff.