/// Empty if no info exists.
/// Note that this will retrieve data from the crossref as needed.
docstring const getInfo(docstring const & key) const;
+ /// Is this a reference from a bibtex database
+ /// or from a bibliography environment?
+ bool const isBibtex(docstring const & key) const;
/**
* "Translates" the available Citation Styles into strings for a given key,
* either numerical or author-year depending upon the active engine. (See