Braun Tibor, Glänzel Wolfgang, Schubert András: Országok, szakterületek, folyóiratok tudománymetriai mutatószámai 1981-1985 (A MTAK Informatikai És Tudományelemzési Sorozata 6., 1992)
Indicators - Publication and citation counts - Citation rates per paper
A. SCHUBERT, W. GLÄNZEL , T . BRAUN : SCIENTOMETRIC DATAFILES Owing to this method, citations can be identified even if the name of the author is seriously misspelled or if different variants of journal title are used. There are, however, cases, when this method introduces a kind of systematic error and that happens, when the same journal has radically different abbreviations depending on whether it occurs in a source or a cited item. A typical example is the Fresenius Zeitschrift für analytische Chemie with abbreviations FRES Z ANAL CHEM as cited and Z ANAL CHEM as source journal, respectively. In such cases citations to the journal may be partly or even totally non-retrievable. At the moment we cannot provide a full list of problematic journals, but, for certain, their number is rather small. Indicators Most of the scientometric indicators included in this study have already been defined and extensively used in our earlier publications 1", particularly as relative indicators and relational charts are concerned 121 3. Only a short summary of terminology and definitions follows here. Publication and citation counts Both publications and citations were counted in the five-year period 19811985. In publication counts only the four types regarded as citable items (articles, reviews, notes and letters) were considered. Citations were counted irrespective of the type of the citing publication. They were retrieved using the already mentioned 15 character identification key of the papers. No adjustment for selfcitations has been made. Citation rates per paper Citation counts are most frequently used in citation rate per paper type indicators. The average citation rate per paper of a journal is a special version of the journal impact factor and differs from the JCR 1 1 value in three points: Scienlomelrics 16 (1989) 9
