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  • 1 Faculty of Business Administration/Business Computing, University of Applied Sciences Wildau, Wildau, Germany
  • | 2 COLLNET-Center, Hohen Neuendorf, Germany
  • | 3 Computer Science Department, Istanbul Bilgi University, Istanbul, Turkey
  • | 4 Centre for R&D Monitoring (ECOOM) and Department of MSI, KU Leuven, Leuven, Belgium
  • | 5 Department of Science Policy & Scientometrics, Library of the Hungarian Academy of Sciences, Budapest, Hungary
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