The d4p_biblioentryBase element is the base element for a bibliographic entry. Again, it is not intended to be used but rather intended to be specialized from. It is a block element.
This element specializes from the p element. See d4p_simpleBiblioentry for an example specialization.
+ topic/p d4p-bibbase-d/d4p_biblioentryBase
Because this is only intended for use as a base for specialization, see the d4p_simpleBiblioentry for an example.