  Purpose. This study presents the results of an experiment we performed to
measure the coverage of Digital Humanities (DH) publications in mainstream open
and proprietary bibliographic data sources, by further highlighting the
relations among DH and other disciplines. Methodology. We created a list of DH
journals based on manual curation and bibliometric data. We used that list to
identify DH publications in the bibliographic data sources under consideration.
We used the ERIH-PLUS list of journals to identify Social Sciences and
Humanities (SSH) publications. We analysed the citation links they included to
understand the relationship between DH publications and SSH and non-SSH fields.
Findings. Crossref emerges as the database containing the highest number of DH
publications. Citations from and to DH publications show strong connections
between DH and research in Computer Science, Linguistics, Psychology, and
Pedagogical & Educational Research. Computer Science is responsible for a large
part of incoming and outgoing citations to and from DH research, which suggests
a reciprocal interest between the two disciplines. Value. This is the first
bibliometric study of DH research involving several bibliographic data sources,
including open and proprietary databases. Research limitations. The list of DH
journals we created might be only partially representative of broader DH
research. In addition, some DH publications could have been cut off from the
study since we did not consider books and other publications published in
proceedings of DH conferences and workshops. Finally, we used a specific time
coverage (2000-2018) that could have prevented the inclusion of additional DH
publications.
