DOI

• Digital Object Identifier
• doi

^https?:\/\/(?:dx\.|www\.)?doi\.org\/(10\.[0-9]{4,}(?:\.[0-9]+)*(?:\/|%2F)(?:(?![\"&\'])\S)+)

^https?:\/\/advances\.sciencemag\.org\/lookup\/external-ref\?access_num=(10\.\d{4,9}.+)&link_type=DOI

^https?:\/\/royalsocietypublishing\.org\/doi\/(10\.[0-9]{4,}(?:\.[0-9]+)*(?:\/|%2F)(?:(?![\"&\'])\S)+)

^https?:\/\/journals\.plos\.org\/plosone\/article\?id=(10\.[0-9]{4,}(?:\.[0-9]+)*(?:\/|%2F)(?:(?![\"&\'])\S)+)

^https?:\/\/digital\.casalini\.it\/(10\.[0-9]{4,}(?:\.[0-9]+)*(?:\/|%2F)(?:(?![\"&\'])\S)+)$

^https?:\/\/search\.crossref\.org\/search\/works\?q=([0-9.]+)%2F([^\&]+)

^https?:\/\/(?:www\.)?oxfordreference\.com\/display\/(10\.[0-9]{4,}(?:\.[0-9]+)*(?:\/|%2F)(?:(?![\"&\'])\S)+)

^https?:\/\/(?:www\.)?taylorfrancis\.com\/books\/oa-edit\/(10\.4324\/.+)\/

^https?:\/\/doi\.org\/(10\.[0-9]{4,}(?:\.[0-9]+)*(?:\/|%2F)(?:(?![\"&\'])\S)+)

^https?:\/\/(?:www\.)?earthdoc\.org\/content\/papers\/(10\.[0-9]{4,}(?:\.[0-9]+)*(?:\/|%2F)(?:(?![\"&\'])\S)+)

^https?:\/\/(?:www\.)?oxfordscholarlyeditions\.com\/display\/(10\.[0-9]{4,}(?:\.[0-9]+)*(?:\/|%2F)(?:(?![\"&\'])\S)+)

^https?:\/\/onlinelibrary\.wiley\.com\/doi\/(10\.[0-9]{4,}(?:\.[0-9]+)*(?:\/|%2F)(?:(?![\"&\'])\S)+)

^https?:\/\/(?:www\.)?degruyter\.com\/document\/doi\/(10\.[0-9]{4,}(?:\.[0-9]+)*(?:\/|%2F)(?:(?![\"&\'])\S)+)

^https?:\/\/chooser\.crossref\.org\/\?doi=(10\.\d+)%2F([^#\/?]+)

^https?:\/\/(?:www\.)?science\.org\/doi\/(10\.[0-9]{4,}(?:\.[0-9]+)*(?:\/|%2F)(?:(?![\"&\'])\S)+)$

^https?:\/\/(?:www\.)?frontiersin\.org\/articles\/(10\.[0-9]{4,}(?:\.[0-9]+)*(?:\/|%2F)(?:(?![\"&\'])\S)+)$

^https?:\/\/ijbnpa\.biomedcentral\.com\/articles\/(10\.[0-9]{4,}(?:\.[0-9]+)*(?:\/|%2F)(?:(?![\"&\'])\S)+)$

^https?:\/\/journals\.sagepub\.com\/doi\/full\/(10\.[0-9]{4,}(?:\.[0-9]+)*(?:\/|%2F)(?:(?![\"&\'])\S)+)$

^https?:\/\/journals\.aps\.org\/prx\/.+\/(10\.[0-9]{4,}(?:\.[0-9]+)*(?:\/|%2F)(?:(?![\"&\'])\S)+)$

^https?:\/\/link\.springer\.com\/article\/(10\.[0-9]{4,}(?:\.[0-9]+)*(?:\/|%2F)(?:(?![\"&\'])\S)+)$

^https?:\/\/beta\.ukdataservice\.ac\.uk\/datacatalogue\/studies\/study\?id=(\d+)

https://hdl.handle.net/$1

https://scholia.toolforge.org/doi/$1

http://api.semanticscholar.org/$1

http://api.crossref.org/works/$1

https://scite.ai/reports/$1

https://www.researchgate.net/search.Search.html?query=$1

https://dissem.in/p/direct/$1

https://www.scilit.net/article/$1

https://sciprofiles.com/search/publications/1?doi=$1

https://publons.com/publon/$1

https://doaj.org/api/v1/search/articles/doi:$1

http://doi.cnki.net/Resolution/Handler?doi=$1

Syntax described by Andrew Gilmartin (member of the U.S. Crossref team) for early DOIs (catches approximately 300,000 more DOIs than the "modern Crossref DOI" regular expression). Escape character added to avoid malformed input error. (English)