core_api_client: An API for the CORE aggregation service for open access papers

Recent efforts to make research publications public have had a profound effect on the scientific publishing landscape. With a large influx in publicly available research contributions, the need for software tooling that supports information retrieval from indexing services is invaluable. Complementing well established indexing services such as Scopus, Web of Science, PubMed, etc. is CORE, which vows to provide a holistic view including contributions contained in aforementioned well established indexers. Conveniently, CORE offers an API for accessing data. This paper presents a client library that fully implements their API and enables quick and easy access to information, which is relevant for literature reviews as well as the scientific field of scientometrics.