Handbooks in Economics, a great series with up to date scholarly research developments in a variety of economic subfields. Check out the following volume: Handbook of International Economics, Part 1 (International Trade Theory and Policy). Of particular use are the rather comprehensive bibiliographies. In many cases, the bibliographies will be cross-referenced and full-text available. In other cases, you will need to use other resources, such as eJournals to locate the full-text of the desired article or DiscoverE for a book.
The top two articles require you to search for the International Economic Review and National Bureau of Economics Research in eJournals; the other article is already available to you full-text by way of the index.