00421nam a2200133Ia 4500008004100000100002400041245010700065260000900172300001300181504001100194650002100205650002400226773003700250181130s2018    xx            000 0 und d  aFeenstra, Robert C.  aAlternative sources of the gains from international trade:bvariety, creative destruction, and markups  c2018  ap.25-45.  dSpring  aForeign commerce  aInternational trade  aJournal of Economic Perspectives