4Marek Dubovec. The Problems and Possibilities for Using Electronic Bills of Lading as Collateral [J]. Arizona Journal of International & Comparative Law, Vol. 23, No. 2, 2006.
9Emmanuel T. Laryea, Payment for Paperless Trade: Are There Viable Alternatives to the Documentary Credit[J].Law and Policy in International Business, Fall, 2001.
10Welcome to Legal Aspects of a Bolero Bill of Lading, http://bolero.codecircus.co.uk/ assets/31/legal asoects of bill lading1092161487.odf.