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CrossRef is on of the DOIDigital Object Identifier registration agencies, responsible for scholarly and professional publications; with more than 2000 publishers participating. The participating publishers register metadata records for each DOIDigital Object Identifier and thereby built a big multidisciplinary reference database with more than 29 million records.

The most usage scenarios described below require that the institution become an CrossRef affiliate, e.g. by signing the

The MPGMax-Planck-Gesellschaft is a CrossRef affiliate, a program which focuses on "organizations that are not primary publishers but want to retrieve CrossRef DOIs (Digital Object Identifiers) and bibliographic metadata for persistent linking to publisher full text", s. Further information is available from Inga.

Fetching Metadata

CrossRef supports several methods to request the metadata from its reference database:

via the OpenURLOpen Uniform Resource Locator interface

The OpenURLOpen Uniform Resource Locator interface provides an convenient way to access the metadata record for a known DOIDigital Object Identifier. The service supports requests in compliance with version 0.1 or version 1.0 of the OpenURLOpen Uniform Resource Locator standard. Currently no user account is required to access this interface, but this is subject to change.

Example requests:

More information:

via the OAIOpen Archives Initiative interface

CrossRef operates an OAI-PMHOpen Archives Initiative Protocol for Metadata Harvesting service provider for distributing metadata to subscribers which is especially helpful for a bulk download of metadata records. Accessing this interface requires an additional agreement which is currently not available in the MPG.

Example requests:

More information:

Available Outputs

Additional Tools

doi resolver (provide a doi and be redirected to the corresponding article location):

free doi lookup (provide metadata and receive the corresponding doi):

simple text query (provide a reference and retrieve doi):
Example reference: A. Bergstrom, C.C. Hsieh, P. Lindblad, C.M. Lu, N.R. Cook and A. Wolk, Obesity and renal cell cancer — a quantitative review, Br. J. Cancer 85 (2001), pp. 984–990.

Further Reading