White papers and academic, peer-reviewed journals often provide the information executives need to get "up to speed" in a subject area, especially one unfamiliar to them. It is also a good way to get away from the anecdotal presentation journalists typically use. The content of publications that are peer-reviewed is more respected as being objective/unbiased. White papers are usually very informative and written from an industry perspective by a respected firm. White papers are not peer-reviewed, however.
So where would you go to get quality information on the following:
Mergers or Acquisitions
Transnational Strategy
Porter's Diamond of National Competitive Advantage
Horizontal Integration
Strategic Alliances
Provide source citations and/or links to illustrate these sources.