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Самоцитирование и его влияние на оценку научной деятельности: обзор литературы. Часть II
This review summarizes papers which analyze the impact of self-citation on research evaluation. We introduce a generalized definition of self-citation and its variants: author, institutional, country, journal, discipline, and publisher self- citation. Formulae of the basic self-citation measures are given, namely self-citing and self-cited rates. World literature on author, institutional, country, and journal self-citation is studied in more detail. Current views on the role and impact of self-citation are compiled and analyzed. It is found that there is a general consensus on some points: a) excessive self-citation and its total absence are both seen as pathological; b) self-citation has low impact on large research entities but may be critical for the analysis of individual researchers; c) share of self-citations is generally higher for entities with poor bibliometric performance, while top scientists, institutions, journals receive the majority of their citations from outside. This review also considers how bibliometric tools and databases respond to the challenge of possible manipulation by self-citations and how some bibliometric indicators are adjusted by them.
This second and final part of the review considers institutional, country and journal self-citation. It also examines new bibliometric indicators which adjust for self-citation.
The paper was funded by RFBR, project number 20-111-50209.