c1 Refereed Journal Article  corrected spelling of extensive from extentensive in title LL 26/9/13. Paper title is: Unbalanced international trade flows and their implication: an extentensive review (added to abstract), Verified, Not in Sherpa/Oaklist, 1.10.13-MMM. Added keyword 'implications' as author suppied title as: ..... implications.....8.10.13-MMM. HERDC documentation added to dark upload - HD 14/5/20