Author: A. Libkind 1
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  • 1 Research Institute of Information on Mechanical Engineering 12 Parkovaya ul., 5 Moscow (USSR) 12 Parkovaya ul., 5 Moscow (USSR)
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The hypothesis proposed by the author expresses that Zipf's law is only fulfilled on rank distributions which correspond to highly integrated (closed) subject fields. This hypothesis was tested on vast amount of empirical data. It was shown that document files in integrated fields are characterised by thematic, chronological (and sometimes geographical) closedness, as well as closedness by citation. Relationships were found between empirical facts usually considered in isolation within the frameworks of different scientometric and bibliometric theories (the theory of information concentration and scattering, obsolescence theory, theory of changing source productivity).