Law
Archiv für die civilistische Praxis (AcP)
Mohr SiebeckVolume 210 (2010) / Issue 6
Treatises
Patrick C. Leyens, Hans-Bernd Schäfer
Lars Klöhn
Jan Lieder
Literature
Caroline Meller-Hannich
Principles, Definitions and Model Rules of European Private Law
pp. 925-940 (16)