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Kajetan Kazimierz Wójcik
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1 ( ) () ISC SCOPUS L ISA : : 1.1. saeid.nazarian@gmail.com 2. hashematapour@ut.ac.ir 3. noroozi@shahed.ac.ir * /06/08 : 1390/03/04: : ) ( :

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15 : :6.DOAJ ISI ISI :(4) :(1) :(1) :(4) Web of science : :(2) :(1) :(2) 25.(ISC) :(4) :(4) Aksnes, D.W A macro study of self-citation. Scientometrics 56 (2): Costas R. et al Self-citations at the meso and individual levels: effects of different calculation methods. Scientometrics 82: Daya, Salim Self citation and journal impact factor. Evidence based obstetrics and gynecology 6 (4):

4 27 1391 Earle, P. and B. Vickery. 1969. Social science literature use in the UK as indicated by citations. Journal of Documentation 25 (2): 123 141. Figg William et al. 2006.

16 Earle, P. and B. Vickery Social science literature use in the UK as indicated by citations. Journal of Documentation 25 (2): Figg William et al Scientific collaboration results in higher citation rates of published articles. Pharmacotherapy 26 (6): Frenken, K., W. Hotzel, and F. De Vor The citation impact of research collaborations: The case of European biotechnology and applied microbiology ( ). Journal of engineering and technology management 22 (1-2): Glanzel, W., and A. Schubert A new classification scheme of science fields and subfields designed for bibliometric evaluation purposes. Scientometrics 56 (3): Glanzel, W., and A. Schubert Domesticity and internationality in co-authorship, references and citations. Scientometrics 65 (3): Glanzel, W., and B. Thijs Does co-authorship inflate the share of self-citations? Scientometrics 61 (3): Hart, R Co-authorship in the academic library literature: a survey of attitude and behaviors. The Journal Of Academic Librarianship 26 (5): Koricheva, J., and R. Leimo Dose scientific collaboration increases the impact of ecological articles? Bioscience 55 (5): Kulkarni, A.V., J. Busse, and I. Shams Characteristics associated with citation rate of the medical literature. PLOS_ONE 2 (5): 403. Lawani, S. M On the Heterogeneity and classification of author self-citations. Journal of the American Society for Information Science 33 (3): Persson O., W. Glänzel, and R. Danell Inflationary bibliometric values: The role of scientific collaboration and the need for relative indicators in evaluative studies. Scientometrics 60 (3): Phelan, T. J A compendium of issues for citation analysis. Scientometrics 45 (1): Pichappan, P., and S. Sarasvady The other side of the coin: The intricacies of author self-citations. Scientometrics 54 (2): Rousseau, R Why I am not cited, or why are multi-authored papers more cited than others? Journal of Documentation 48 (1): Rousseau, R Temporal differences in self-citation rates of scientific journals. Scientometrics 44 (3): Thijs, B., and W. Glanzel The influence of author self-citations on bibliometric meso-indicators: The case of European universities. Scientometrics 66 (1): Van Raan, A. F. J The influence of international collaboration on the impact of research results. Some simple mathematical considerations concerning the role of self-citations. Scientometrics 42 (3): Yitzhaki, M The language preference in sociology: Measures of language self-citation, relative own-language preference indicator, and mutual use of languages. Scientometrics 41 (1/2):

Iranian Research Institute For Science and Technology ISSN 2251-8223 eissn 2251-8231 Indexed in LISA, SCOPUS & ISC Vol.27 No.

Public Libraries Institution Hashem Atapour 1 PhD Candidate in Library and Information Science, Tehran University Abdolreza Noroozi Chakoli 2 Assistant Professor in Library and Information Sciences,

17 Iranian Research Institute For Science and Technology ISSN eissn Indexed in LISA, SCOPUS & ISC Vol.27 No.4 pp: summer 2012 High Citation of Iranian Coauthored articles in comparison with single authored ones: does it link with self-citation Seaid Nazarian* MA in Library and Information Science, Public Libraries Institution Hashem Atapour 1 PhD Candidate in Library and Information Science, Tehran University Abdolreza Noroozi Chakoli 2 Assistant Professor in Library and Information Sciences, Shahed University Abstract: The aim of this research was to investigate the effect of coauthorship and self-citation on the citation rates of Iranian indexed articles in Web of Science (WoS). Research population included Iranian indexed articles in WoS in 2007 which had been received at least one citation. Numbers of articles in the time of research (October & November 2010) was 7355, which 390 of them, using stratified random sampling, was selected as sample. Research results showed that coauthored articles have received more citations than single-authored ones and this difference was statistically significant. On the other hand, selfcitation exclusion has significantly reduced the citation rates of both coauthored and single-authored articles. After self-citation exclusion, existing difference between citation rates of co-authored and singleauthored articles lost its significance. So, it can be concluded that selfcitation exclusion led to reduction of citation rates of Iranian indexed articles in WoS, but this exclusion affected co-authored articles citation rates more than single-authored ones. In other words, high citation of Iranian co-authored articles in comparison with single-authored articles has been affected mainly by self-citation, not by foreign citation. This finding, which was our contribution, contradicted with results of previous researches. Keywords: citation, Iran, co-authorship, self-citation, Web of Science *Corresponding author: saeid.nazarian@gmail.com 1. hashematapour@ut.ac.ir 2. noroozi@shahed.ac.ir viii

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