1. Adler, R., Ewing, J., & Taylor, P. (2008). Citation statistics. IMU/ICIAM/IMS-Committee on Quantitative Assessment of Reseach.〈http://www.mathunion.org/fileadmin/IMU/Report/CitationStatistics.pdf〉（2012年2月20日）
2. Althouse, B. M., West, J. D., Bergstrom, T., & Bergstrom, C. T. (2009). Differences in impact factor across fields and over time. Journal of the American Society for Information Science and Technology, 60, 27–34.
3. Amin, M., & Mabe, M. (2000). Impact factors: Use and abuse. Perspectives in Publishing, 1, 1–6.
4. Anonymous (2002). Soft responses to misconduct. Nature, 420, 253.
5. Ball, P. (2002). Paper trail reveals references go unread by citing authors. Nature, 420, 594.