| Author(s) | Title | Year | Reference | Language | Note |
|---|---|---|---|---|---|
| Hondius, Ewoud H. | De Rode Bundel, het Groenboek en de Blauwe Knop Optioneel Instrument: Optie of Niet? (The Red Volume, the Green Paper and the Blue Button: Is the Optional Instrument an Option or Not?) | 2011 | Het Groenboek Europees Contractenrecht: Naar een Optioneel Instrument?, M.W. Hesselink, A.A.H. van Hoek, M.B.M. Loos & A.F. Salomons, eds., pp. 53-81, Den Haag: Boom Juridische uitgevers, 2011 | Dutch | |
| De Booys, Timothy Q. Mak, Chantal Hesselink, Martijn W. | How the CFR can improve the Consumer Rights Directive. A comparison between the model rules in the Draft Common Frame of Reference and the European Commission's proposal for a Consumer Rights Directive. | 2009 | PE 419.608 | English | Commissioned by European Parliament's Committee on Legal Affairs |