abstractExtractR: Retrieve and Audit Scholarly Metadata from Multiple Sources
Retrieves and normalizes scholarly article metadata and
abstracts from the 'Crossref' REST API
<https://www.crossref.org/documentation/retrieve-metadata/rest-api/>,
the 'OpenAlex' API <https://help.openalex.org/> and the 'Scopus' Search
API <https://dev.elsevier.com/sc_apis.html>. Provides bibliographic
searches, cursor pagination, publication date and author filtering,
abstract retrieval by Digital Object Identifier (DOI), cached batch
enrichment, merging of duplicate records, metadata-quality audits,
reproducible search snapshots, local archives with integrity
verification, and export to
comma-separated values (CSV), 'BibTeX' and 'RIS' citation files.
Network requests support configurable timeouts and test callbacks.
'Scopus' searches require an 'Elsevier' API key; 'Crossref' queries do
not. 'OpenAlex' supports limited keyless searches and authenticated
pagination.
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[aut, cre, cph] (affiliation: Faculty of Media Arts and Design of
the Technical University of Porto)