25B [Fundamental breach (definition of): substantial deprivation of expectation, etc.];

49A1 [Buyer's right to avoid contract (grounds for avoidance): fundamental breach of contract]'

72A2 [Avoidance prior to date for performance (when clear that other party will commit fundamental breach): other party may declare avoidance];

73C1 [Avoidance in installment contracts (defect in one delivery prevents use of other deliveries): avoidance for both past and future installments];

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

81A ; 81B [Effect of avoidance on obligations (arbitration, restitution): obligations of both parties under Convention; Contract clauses not terminated by avoidance]