5M. J. Bonell, A New Approach to International Commercial Contracts: The UNIDROIT Principles of International Commercial Contracts, Kluwer Law International, 1999, pp. 3 -4.12
6See Joseph Lookofsky,The Limits of Commercial Contract Freedom: Under the UNIDROIT "Restatement" and Danish Law ,Journal of American Comparative law, 1998, Vol. 46, No. 3,486 - 508.
10M. J. Bonell, UNIDROIT Principles 2004 - The New Edition of the Principles of International Commercial Contracts Adopted by the International Institute for the Unification of Private Law, Uniform Law Review 2004,5 -40.
