References
- Academic Ranking of World Universities. Available at http://www.arwu.org/ARWUMethodology2010.jsp (accessed 25 July 2013).
- Bureau of Labor Statistics, Occupational Employment Statistics. (2012) Available at http://www.bls.gov/oes/ (accessed 1 July 2013).
- Web of Science Core Collection. Available at http://www.isiknowledge.com (accessed 11–14 July 2013), for publication record information.
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