CrossRef is an official Digital Object Identifier (DOI) Registration Agency of the International DOI Foundation. It was launched in early 2000 as a cooperative effort among publishers to enable persistent cross-publisher citation linking in online academic journals.[1]



CrossRef has more than 900 voting member publishers who represent over 3000 societies and publishers, including both commercial and not-for-profit organizations. CrossRef also includes publishers with varied business models, including those with open access and subscription policies. CrossRef does not provide a database of fulltext scientific content. Rather, it facilitates the links between content hosted at other sites.

It now interlinks millions of items from a variety of content types, including journals, books, conference proceedings, working papers, technical reports, and datasets. Linked content includes materials from Scientific, Technical and Medical (STM) and Social Sciences and Humanities (SSH) disciplines. The expense is paid for by CrossRef Member publishers.

In addition to the DOI technology linking scholarly references, CrossRef enables a common linking contract among its participants. Members agree to assign DOIs to their current journal content and they also agree to link from the references of their content to other publishers' content. This reciprocity is an important component of what makes the system work.

Non-publisher organizations can participate in CrossRef by becoming affiliates. Such organizations include libraries, online journal hosts, linking service providers, secondary database providers, and providers of article discovery tools.

The core CrossRef system was built by Atypon.


In addition to assigning DOIs to scholarly content, CrossRef has additional services to fulfill its mission "to enable easy identification and use of trustworthy electronic content by promoting the cooperative development and application of a sustainable infrastructure". These services include:

Services for researchers available from CrossRef:


External links

Wikimedia Foundation. 2010.

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