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  • × author_ss:"Martín-Martín, A."
  • × author_ss:"Ortega, J.L."
  • × theme_ss:"Informetrie"
  • × language_ss:"e"
  • × type_ss:"a"
  1. Delgado-Quirós, L.; Aguillo, I.F.; Martín-Martín, A.; López-Cózar, E.D.; Orduña-Malea, E.; Ortega, J.L.: Why are these publications missing? : uncovering the reasons behind the exclusion of documents in free-access scholarly databases (2024) 1.00 
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