Abstract
The article describes the method for the online determination of the journal impact factor (JIF). The method is very simple and can be used both for the ISI defined journal impact factor and for the calculation of other generalised journal impact factors. But the direct online method fails for non-ISI journals i.e. journals not indexed by ISI to the three citation databases. For such journals only the "External Cited Impact Factor" associated with citations from ISI journals (ECIFisi) can be determined online by the common method. As an extra benefit the online method makes available the determination of the geographical distribution of citations and citable units in relation to any given JIF, i.e. the international impact for a particular journal in a given year. The method is illustrated by calculating the generalised JIF, self-citations and ECIF(isi) as well as the international impact for Journal of Documentation and Scientometrics.
| Original language | English |
|---|---|
| Journal | Scientometrics |
| Volume | 40 |
| Issue number | 3 |
| Pages (from-to) | 529-540 |
| Number of pages | 12 |
| ISSN | 0138-9130 |
| DOIs | |
| Publication status | Published - 1 Jan 1997 |
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