| Author(s) | Title | Year | Reference | Language | Note |
|---|---|---|---|---|---|
| De Cristofaro, Giovanni | "Invalidity" of Contracts and Contract Terms in the Feasibility Studyy on a Future Instrument for European Contract Law | 2011 | contained in Towards a European Contract Law, Reiner Schulze and Jules Stuyck ( eds), Sellier European Law Publishers, Munich, p.97-120 | English | |
| Rochfeld, Judith | Formation du contrat: négociations, conditions de conclusion | 2009 | RDC 2009, 844 | French | |
| Vaquer Aloy, Antoni | Farewell to Windscheid? Legal Concepts Present and Absent from the Draft Common Frame of Reference (DCFR) | 2009 | ERPL 2009, 487 | English | |
| Hesselink, Martijn W. | The Common Frame of Reference as a Source of European Private Law | 2009 | (2009) 83 Tul. LR 919-971 | English |