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

35A [Conformity of goods to contract: quality, quantity and description required by contract];

39A [Requirement to notify seller of lack of conformity: buyer must notify seller within reasonable time];

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

73B12 [Avoidance in installment contracts (refusal of future installments): when breach in one installment gives grounds to expect fundamental breach with respect to future installments];

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