References

Nelson RR, editor. 1993. National Innovation Systems: A Comparative Analysis. New York: Oxford University Press.

Organisation for Economic Co-operation and Development (OECD). 2002. Frascati Manual, Proposed Standard Practice for Surveys on Research and Experimental Development.

Regets MC. 2007. Research issues in the international migration of highly skilled workers: A perspective with data from the United States. Working Paper SRS 07-203. Arlington, VA: Division of Science Resources Statistics, National Science Foundation.