It seems to me that the way pandoc handles bibliographies is slighty different from how it handles other formats. After doing some checks, it looks individual bibliographic elements are not converted to AST elements but rather Metadata elements. This is true at the very least for markdown.

Could anyone point to some resources, information or perhaps source code for how pandoc specifically handles LaTeX based bibliographies such as BibTeX or BibLaTeX? Are the readers and writers for these formats written in Lua? If so where can I find them?

Regards,

Amine