I want to do the following:
Supose you have a written document, with sections, subsections, subsubsections, figures, equations, bibliography, etc. With reference among themselves.
I would like to create "in an automatic way", a graph diagram that express the relations (references) in between all the elements of the document.
I know I can use TiKz to create the graph. My question is how could I can obtain the information off all the objects and their references to draw this graph.
This document is an example of what I would like to achieve

Thank you !