Completeness and overlap in open access systems: Search engines, aggregate institutional repositories and physics-related open sources

• Ming-yueh Tsay ,

  Roles Conceptualization, Formal analysis, Funding acquisition, Methodology, Project administration, Supervision, Validation, Writing – original draft, Writing – review & editing

  * E-mail: mytsay@nccu.edu.tw

  Affiliation Information and Archival Studies, National Cheng-Chi University, Taipei, Taiwan

  http://orcid.org/0000-0001-5484-1313

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• Tai-luan Wu,

  Roles Conceptualization, Data curation, Formal analysis, Investigation, Visualization

  Affiliation Information and Archival Studies, National Cheng-Chi University, Taipei, Taiwan

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• Ling-li Tseng

  Roles Software, Visualization

  Affiliation Information and Archival Studies, National Cheng-Chi University, Taipei, Taiwan

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