Why are these publications missing? Uncovering the reasons behind the exclusion of documents in free‐access scholarly databases

Which of the metadata with relevance for bibliometrics are the same and which are different when switching from Microsoft Academic Graph to OpenAlex?

(2023) Thomas Scheidsteger et al.   Profesional de la Informacion

The journal coverage of Web of Science, Scopus and Dimensions: A comparative analysis

(2021) Vivek Kumar Singh et al.   SCIENTOMETRICS

Google Scholar, Microsoft Academic, Scopus, Dimensions, Web of Science, and OpenCitations’ COCI: a multidisciplinary comparison of coverage via citations

(2020) Alberto Martín-Martín et al.   SCIENTOMETRICS

Two new kids on the block: How do Crossref and Dimensions compare with Google Scholar, Microsoft Academic, Scopus and the Web of Science?

(2019) Anne-Wil Harzing   SCIENTOMETRICS

Which Academic Search Systems are Suitable for Systematic Reviews or Meta‐Analyses? Evaluating Retrieval Qualities of Google Scholar, PubMed and 26 other Resources

(2019) Michael Gusenbauer et al.   Research Synthesis Methods

Coverage of highly-cited documents in Google Scholar, Web of Science, and Scopus: a multidisciplinary comparison

(2018) Alberto Martín-Martín et al.   SCIENTOMETRICS

Dimensions: A competitor to Scopus and the Web of Science?

(2018) Mike Thelwall   Journal of Informetrics

Google Scholar to overshadow them all? Comparing the sizes of 12 academic search engines and bibliographic databases

(2018) Michael Gusenbauer   SCIENTOMETRICS

Google Scholar, Web of Science, and Scopus: A systematic comparison of citations in 252 subject categories

(2018) Alberto Martín-Martín et al.   Journal of Informetrics

The coverage of Microsoft Academic: analyzing the publication output of a university

(2017) Sven E. Hug et al.   SCIENTOMETRICS

Microsoft Academic: is the phoenix getting wings?

(2016) Anne-Wil Harzing et al.   SCIENTOMETRICS

Methods for estimating the size of Google Scholar

(2015) Enrique Orduna-Malea et al.   SCIENTOMETRICS

The journal coverage of Web of Science and Scopus: a comparative analysis

(2015) Philippe Mongeon et al.   SCIENTOMETRICS

The Number of Scholarly Documents on the Public Web

(2014) Madian Khabsa et al.   PLoS One

Ranking top economics and finance journals using Microsoft academic search versus Google scholar: How does the new publish or perish option compare?

(2014) M. Ryan Haley   Journal of the Association for Information Science and Technology

Microsoft academic search and Google scholar citations: Comparative analysis of author profiles

(2014) José Luis Ortega et al.   Journal of the Association for Information Science and Technology

Google Scholar as replacement for systematic literature searches: good relative recall and precision are not enough

(2013) Martin Boeker et al.   BMC Medical Research Methodology

Assessing the citation impact of books: The role of Google Books, Google Scholar, and Scopus

(2011) Kayvan Kousha et al.   JOURNAL OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE AND TECHNOLOGY

Mining citation information from CiteSeer data

(2010) Dalibor Fiala   SCIENTOMETRICS

Citations to the “Introduction to informetrics” indexed by WOS, Scopus and Google Scholar

(2010) Judit Bar-Ilan   SCIENTOMETRICS

Characteristics of research output in social sciences and humanities: From a research evaluation perspective

(2008) Mu-hsuan Huang et al.   JOURNAL OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE AND TECHNOLOGY