Scrape inline references

Extract all the inline references from a text

When dealing with an essay that has not been written with a bibliography manager, it would help to be able to index all the inline references to complete the bibliography in the end.
This function gets, fed with a copied text, output a table containing the references.
While it is always better to use a bibliography manager (e.g. Zotero), this function provides a quick-and-dirty solution. Also, be careful because very inconsistent use of reference format yield to partial results.

Let me know if you have any ideas to make the regex formula more powerful :)