2C. M. Bianca & M. J. Bonell, Commentary on the International Sales Law: The 1980 Vienna Sale Convention, Giuffre, Milan. 603 (1987).
3Secretariat Commentary on Art. 66 of the 1978 Draft [draft counterpart of CISG article 81] : Comments 8 - 11, from http://www. eisg. law. pace. edu/eisg/text/seeomm/secomm - 81. html. visited on 2008/5/3.
4Comment and Notes to PECL Art. 9:308 : Comment C, from http://www. clsg. law. pace. edu/cisg/text/peclcomp81. html. visited on 2008/5/1.
5Secretariat Commentary on Art. 67 of the 1978 Draft [ draft counterpart of CISG article 82] : Comments 2,3, from http://www. cisg. law. pace. edu/cisg/text/seeomm/secomm -82. html. visited on 2008/5/7.
6Francesco G. Mazzotta, Commentary on CISG Article 82 and PECL Article 9:309, (2003). from http ://cisgw3. law. pace. edu/cisg/ text/peclcomp82. html. visied on 2008/5/8.