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Arendt, J.: Imperfect tools : Google Scholar vs. traditional commercial library databases (2008)
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Mejer, J.J.; Conkling, T.W.: Google Scholar's coverage of the engineering literature : an empirical study (2008)
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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)
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Kousha, K.; Thelwall, M.: Google Scholar citations and Google Web/URL citations : a multi-discipline exploratory analysis (2007)
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Donlan, R.; Cooke, R.: Running with the devil : accessing library-licensed full text holdings through Google Scholar (2005)
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