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EPub Bayreuth Persistent Identifier

Persistent Identifiers explained

In order to find, identify and quote all kinds of electronically published data reliably and permanently, it is necessary to coin a persistent identifier. A persistent identifier is a unique lable for a specific digital object and always remains the same. Persistent identifiers remain valid even after a change of the physical storage place, e.g. after changing a server. Two of the best-known persistent identifiers are DOI (Digital Object Identifier) and URN (Uniform Resource Name).

Use of Persistent Identifiers in EPub Bayreuth

All documents published for the first time in electronic format on EPub Bayreuth have been provided with a URN to guarantee a permanent way to quote publications. As the URN has not been established internationally, an additional, globally established persistent identifier, the DOI, will be automatically issued.

In order to guarantee a permanent way of quoting a publication, the UB Bayreuth recommends the use of a DOI.

DOI explanation and usage

A DOI (Digital Object Identifier) is used to identify scholarly objects/publications permanently and uniquely. Additionally, a DOI allows a standardised way of citation. DOIs are registered and stored through DataCite or other registration agencies in context with the related metadata.

Each DOI is a unique sequence of alphanumerical characters and consists of a prefix and a suffix separated by a slash, with the schema identification doi in front of it.

DOI-Struktur

The prefix always starts with 10. and is allocated to a specific data centre (10.15495=University of Bayreuth), while the suffix represents the unique identification of the data publication within the data centre.

On request, we offer the retrospective issuing of a DOI for documents previously published in EPub Bayreuth. Please send an email containing the URN or EPub id (3- or 4-digit number at the end of the entry's URL), the title and the author of the publication to epub@uni-bayreuth.de

URN explanation and usage

All documents published for the first time in electronic format on EPub Bayreuth are provided with a URN (Uniform Resource Name) by the German National Library (DNB). The objective of the URN is the stable identification and trackability of a publication, as well as the facilitation of a standardised citation format.

Each URN is a unique sequence of alphanumerical characters and consists of a name space, a sub-name space and an id. The parts are delimited by a colon:

URN-Struktur