Wilson et al. (2003) have analyzed the impact of trade facilitation on trade flows in
the Asia-Pacific using four indicators:
(1) port efficiency;
(2) customs environment;
(3) regulatory environment; and
(4) e-business usage.
Wilson et al. (2005, 2006) employed the same trade facilitation measures to investigate
their relationship to trade for 75 countries and for the main industrial sectors in
Mexico, respectively