Data model 

All records of a bibliography are held together by a single BibliographicResource which holds the main classes BibliographicEntry, Agent, and Tag. The class BibliographicEntry has a set of fields that contain inforomation of non-independent items (e.g. papers in a journal) as well as independent publications (e.g. the journal itself). Entries may be connected to other data models, which may specify elaborations such as the specific page number of a citation, by using the class SourceRelation.

Extent may be used several times in a bibliographic entry to provide, for example, volume and number of the journal an article is published in. The same class is used to enable providing multiple identifiers. Agent is its own class because agents may occur multiple times per publication, and their role (e.g., author or editor) can be specified by being added via an AuthorshipRelation.

In addition, the model knows flexible LabelTag and SameAs classes, which can be used to group entries and agents via labels and to connect entities to authority files.

Graphical overview