Kupfer F, Meersman H, Onghena E, Van de Voorde E. AIR FREIGHT AND MERCHANDISE TRADE: TOWARDS A DISAGGREGATED ANALYSIS. JATS [Internet]. 2012Jul.1 [cited 2025Sep.27];2(2):28-. Available from: https://www.jats.aviationsociety.gr/index.php/JATS/article/view/99