9C [Practices established by the parties];

23A [Time of conclusion of contract: contract concluded when acceptance becomes effective];

63A [Seller's notice fixing additional final period for performance];

64A21 [Seller's right to avoid contract (grounds for avoidance): buyer does not pay or take delivery within an additional period set by the seller under art. 63];

74A ; 74A1 [General rules for measuring damages: loss suffered as consequence of breach; Includes loss of profit];

78A [Interest on delay in receiving price or any other sum in arrears]