4B ; 4B1 [Issues excluded - Validity under domestic law];

7A33 [Applications of good faith standards];

7B ; 7B1 [Materials for interpretation - International case law];

9B [Implied agreement on international usage – with respect to interest rate];

25A ; 25A1 [Effect of a fundamental breach - Avoidance of contract];

26A ; 26A1 [Effective declaration of avoidance; Notice to the other party required -26 notice of avoidance can be derived from the wording of the statement of claim];

81C [Restitution by each party of benefits received (art. 81(2)];

84A [Seller bound to refund price must pay interest]