Citation of publications on OPUS / URN

Publications on OPUS are basically equal to print publications and therefore they can be cited. Electronic publications should be cited according to ISO 690-2. Further information on this topic can be found on the Wissenschaftsserver der Universität des Saarlandes Scidok and the project "Digitale Dissertationen im Internet".

The following examples show, how electronic publications can be cited according to ISO 690-2. "Date" means in this case the last time the author accessed a source.

• Example 1 (doctoral thesis):
Mustermann, Klaus: Title of thesis. - Würzburg, Univ., Diss., 2007. - [online].
URN: urn:nbn:de:bvb:20-opus-XXXXX [Datum]
• Example 2 (any publication):
Mustermann, Klaus: Title. - Würzburg : Universität Würzburg, 2007. - [online].
URN: urn:nbn:de:bvb:20-opus-XXXXX [Datum]
• Example 3 (postprint):
Authors: Title. Journal Title (Year) Volume (Issue), Pages.
DOI of the primary publication or URN: urn:nbn:de:bvb:20-opus-XXXXX[Datum]

URN (Uniform Resource Name)

There is an URN for each document published on OPUS.
URNs are standardized references to digital sources comparable to the ISBN for printed works. While URLs refer to specific physical locations of resources and may change if the resource moves from one host to another, URNs are intended to serve as persistent, location-independent, resource identifiers and guarantee persistence in access and citation.

Use the URN whenever you refer to your work.
At the moment URNs can not be resolved by a web browser. For this reason the URN must be translated to a URL. The German National Library (DNB) provides a Resolving-Service for this: http://nbn-resolving.de.
To transform an URN to a URL and make it readable for a web browser, you simply put the name of a resolver in front of the URN:
URN: urn:nbn:de:bvb:20-opus-XXXXX
Eingabe: http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-XXXXX

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