3Garfield E. Journal impact factor : a brief review[ J ]. Cana-dian Medical Association, 1999,161 ( 8 ) :979-980. 被引量：1
4Luwel, M. Publication delays in the science field and their re- lationship to the ageing of scientific literature [ J ]. Scientomet- rics, 1998,41 ( 1 ) :29-40. 被引量：1
5Egghe L. The influence of publication delays on the observed ag- ing distribution of scientific literature [ J ]. Journal of the American Society for Information Science,2000,51 (2) :158-165. 被引量：1
