Author: Fred Ye
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  • 1 Zhejiang University Dept. Information Resources Management Hangzhou P. R. China
  • 2 Institution of Scientific and Technical Information of China Beijing P. R. China
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Based on two large data samples from ISI databases, the author evaluated the Hirsch model, the Egghe-Rousseau model, and the Glänzel-Schubert model of the h-index. The results support the Glänzel-Schubert model as a better estimation of the h-index at both journal and institution levels. If hc, hp and hpc stand for the Hirsch estimation, Egghe-Rousseau estimation, and Glänzel-Schubert estimation, respectively, then an inequality hp < hhpc < hc holds in most cases.