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Get a single scholarly work by its OpenAlex ID (e.g. W2741809807) or a DOI. Returns title, publication_year, doi, cited_by_count, authorships, primary_location (journal), and referenced_works

{title, publication_year, doi, cited_by_count, authorships, concepts}

Search research fields and topics by name. Returns results[] with id, display_name, level, description, works_count, and cited_by_count for each concept

{results: [{id, display_name, level, description, works_count}]}