7A3 [Observance of good faith: principle of good faith held to preclude possibility of taking into account any impediments to perform];

63A [Notice fixing additional final period for buyer's performance];

64A21 [Grounds for avoidance: buyer does not pay within additional period of time set by seller];

74A [General rules for measuring damages];

75A [Damages established by substitute transaction];

78A [Interest on delay in receiving price: rate set at domestic law (citing Art. 7(2)) from date of avoidance of contract]

79A [Impediment excusing party from damages]