4B [Issues covered and excluded (issues excluded): unjust enrichment (covered by applicable domestic law); Penalty clause];

7A33 [Observance of good faith: application of good faith standards to delay in declaring contract avoided];

18A [Acceptance (item and manner): criteria for acceptance];

19A1 [Acceptance with modifications (reply purporting to accept but containing additions or modifications): in general, constitutes rejection and counter-offer];

25B [Definition of fundamental breach: substantial depreviation of expectation, etc.];

49A [Buyer's right to avoid contract: grounds for avoidance];

61A [Seller's remedies for breach of contract by buyer];

63A [Notice fixing additional final period for buyer's performance: seller's failure to avail itself of this right held contrary to its obligation to mitigate damages];

77A [Obligation to take reasonable measures to mitigate damages];

80A [Failure of performance caused by other party: party causing non-performance (loss of rights)];

81C [Effect of avoidance on obligations: restitution by each party of benefits received];

84A [Seller bound to refund price must pay interest