1. Luukkonen T. Bibliometrics and evaluation of research performance. Ann Med. 1990. 22:145–150.
2. Chew FS, Relyea-Chew A. How research becomes knowledge in radiology: an analysis of citations to published papers. AJR Am J Roentgenol. 1988. 150:31–37.
3. Chen MY, Jenkins CB, Elster AD. Internationalization of the American Journal of Roentgenology: 1980-2002. AJR Am J Roentgenol. 2003. 181:907–912.
4. Rahman M, Haque TL, Fukui T. Research articles published in clinical radiology journals: trend of contribution from different countries. Acad Radiol. 2005. 12:825–829.
5. Mela GS, Martinoli C, Poggi E, Derchi LE. Radiological research in Europe: a bibliometric study. Eur Radiol. 2003. 13:657–662.
6. Miguel-Dasit A, Martí-Bonmatí L, Sanfeliu P. Bibliometric analysis of the Spanish MR radiological production (2001-2007). Eur J Radiol. 2008. 67:384–391.
7. Johnson CA, Toms AP. The impact of European research ethics legislation on UK radiology research activity: a bibliometric analysis. Clin Radiol. 2009. 64:983–987.
8. Akpinar E, Karçaaltincaba M. Analysis of scientific papers in the field of radiology and medical imaging included in Science Citation Index expanded and published by Turkish authors. Diagn Interv Radiol. 2010. 16:175–178.
9. National Academy of Medicine of Korea. Korea Medical Research Report 2006. 2007. Seoul: National Academy of Medicine of Korea.
10. National Academy of Medicine of Korea. Korea Medical Research Report 2010. 2011. Seoul: National Academy of Medicine of Korea.
11. Han MC, Lee CS. Scientific publication productivity of Korean medical colleges: an analysis of 1988-1999 MEDLINE papers. J Korean Med Sci. 2000. 15:3–12.
12. Ozsunar Y, Unsal A, Akdilli A, Karaman C, Huisman TA, Sorensen AG. Technology and archives in radiology research: a sampling analysis of articles published in the AJR and Radiology. American Journal of Roentgenology. AJR Am J Roentgenol. 2001. 177:1281–1284.