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Zeros, Quality, and Space: Trade Theory and Trade Evidence[J] . Richard Baldwin,James Harrigan.American Economic Journal: Microeconomics . 2011 (2)
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The quality of a firm’s exports: Where you export to matters[J] . Paulo Bastos,Joana Silva.Journal of International Economics . 2010 (2)
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Reciprocal Trade Agreements in Gravity Models: A Meta‐Analysis[J] . MariaCipollina,LucaSalvatici.Review of International Economics . 2010 (1)
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Product quality and the direction of trade[J] . Juan Carlos Hallak.Journal of International Economics . 2005 (1)