Providing impact: The distribution of JCR journals according to references they contribute to the 2-year and 5-year journal impact factors

作者：

Highlights：

• The distribution of JIF references in citing journals showed a Bradford-like curve.

• Journals clearly varied in the number and percentage of JIF references they provide.

• Rank-order distributions were obtained with an empirical two-exponent equation.

• In 41% of journals, items published 2–3 years before contributed most to 2-year JIFs.

摘要

•The distribution of JIF references in citing journals showed a Bradford-like curve.•Journals clearly varied in the number and percentage of JIF references they provide.•Rank-order distributions were obtained with an empirical two-exponent equation.•In 41% of journals, items published 2–3 years before contributed most to 2-year JIFs.

论文关键词：Journal impact factor,Citations,References,Journal distribution

论文评审过程：Received 20 May 2014, Revised 11 January 2015, Accepted 12 January 2015, Available online 7 February 2015.

论文官网地址：https://doi.org/10.1016/j.joi.2015.01.005