| Author(s) | Title | Year | Reference | Language | Note |
|---|---|---|---|---|---|
| Kieninger, Eva-Maria | Die Vollharmonisierung des Rechts der Allgemeinen Geschäftsbedingungen - eine Utopie? | 2009 | RabelsZ bd.73 (2009), 793 | German | |
| Whittaker, Simon | 'The Draft Common Frame of Reference'. An Assessment | 2008 | Simon Whittaker; St. John's College, University of Oxford, 2008 | English | commissioned by the Ministry of Justice |