The UNIDROIT Principles as a Common Frame of Reference for the Uniform Interpretation of National Laws.- The Use of the UNIDROIT Principles of International Commercial Contracts in Order to Interpret or Supplement Argentine Contract Law.- The UNIDROIT Principles as Reference for the Uniform Interpretation of National Laws - National Report Austria.- General Considerations on the Interaction of the UPICC and the Brazilian Law.- The UNIDROIT Principles as Reference for the Uniform Interpretation of National Laws: Chile.- The UNIDROIT Principles as Reference for the Uniform Interpretation of National Laws: China.- UNIDROIT Principles as Reference for Uniform Interpretation of National Laws: Czech Republic.- The Use of the UPICC in Order to Interpret or Supplement German Contract Law.- Questionnaire on the Use of the UPICC in Order to Interpret or Supplement National Contract Law – Greece.- The UNIDROIT Principles of International Commercial Contracts (UPICC) as Reference for the Uniform Interpretation of Guatemalan Law.- The UNIDROIT Principles as Reference for the Uniform Interpretation of National Laws: Report on Hungarian Law.- Italian National Report on the Use of the UPICC in Order to Interpret or Supplement National Contract Law.- The UNIDROIT Principles as Reference for the Uniform Interpretation of National Laws: The Case of Japan.- The UNIDROIT Principles of International Commercial Contracts (UPICC) as Reference for the Uniform Interpretation of Paraguayan Law.- Questionnaire on the Use of the UPICC in Order to Interpret or Supplement National Contract Law: South Africa.- Replies to the Questionnaire on the Use of the UPICC in Order to Interpret or Supplement National Contract Law: National Report for Turkey.- Questionnaire on the Use of the UPICC in Order to Interpret or Supplement National Contract Law: Uruguay.- The UNIDROIT Principles as Reference for the Interpretation of US Law.- Use of the UPICC in Order to Interpret or Supplement National Contract Law: Venezuela.