Digital Object Identifier or DOI is a persistent identifier or handle used to uniquely identify objects, standardized by the International Organization for Standardization (ISO). An implementation of the Handle System, DOIs are in wide use mainly to identify academic, professional, and government information, such as journal articles, research reports and data sets, and official publications though they also have been used to identify other types of information resources, such as commercial videos.
World Journal of Research and Review (WJRR) is indexed in CrossRef.
The CrossRef system is used for linking citations across publishers. To ensure direct linking to and from its contents, WJRR is linked to CrossRef. Online archives have also been indexed.