# How can I create a second bibliography for unreferenced items? [duplicate]

I'm writing a literature study in LaTeX. There are some studies I excluded from the search results. I would like to create a second bibliography with items I excluded. Right now, I've got this:

\bibliography{./bib/references.bib}


I would like to have a section/chapter before called "Unreferenced articles", with a few articles I did not refer to. Worth mentioning is that these articles are listed in ./bib/references.bib but if I refer to them, they will pop up in the normal bibliography as well, which is not what I want.

I know about \nocite, but that's not useful in this scenario. However, if something like this existed, that would be great:

\nocite[unreferenced]{66, 142, 143}


to have articles 66, 142 and 143 pop up only in the Unrefernced Articles section and not show up in Bibliography.

• Please provide a proper minimal example, complete with sample .bib entries, which people can compile and play with. This will also clarify your bibliographic management software. It would be helpful to note whether you are willing to change this, if such a change would facilitate a solution. – cfr Sep 18 '17 at 23:01
• Have you looked at the multibib package? It lets you set up two separate bibliographies. Have you consulted the Multiple bibliographies? entry at the UK TeX FAQ website? – Mico Sep 19 '17 at 5:15

## 2 Answers

If you use biblatex, things are quite straight forward:

First, add keywords = {unreferenced} to the .bib-file entries of the items that you want to appear in the second bibliography.

Then use the following code to print the two bibliographies:

\printbibliography[notkeyword=unreferenced]
\printbibliography[keyword=unreferenced,title=Unreferenced Articles]


Having thought a bit about it, another possibility that does not entail updating your bibfile every time you change something would be to use two refsections:

\begin{document}
\newrefsection

Text and normal citations go here.

\printbibliography
\newrefsection
\nocite{everything you did not cite above}
\printbibliography[title=Unreferenced Articles]


You can adopt my solution to Including additional bibliography (publication list) in thesis

Make a seperate LaTeX document, and then just include the resulting bibliography. You second document, let's say nocite.tex might look like this:

\documentclass{article}
\usepackage{natbib}
% whatever you need here, basically a good idea is to use your original header/preamble
\begin{document}
Hello world!
\nocite{66,142,143}
\bibliographystyle{mystyle}
\bibliography{bibliofile}
\end{document}


Now you compile this by standard sequence latex+bibtex+latex+latex. In your real document you can add the following:

\begingroup
\def\refname{List of my Publications}
\def\bibname{List of my Publications}
\input{nocite.bbl}
\endgroup


This should add the bibliography from the second document into the first one, and the name of the chapter/section should be List of my Publications. Note that we could surely omit one of the two almost identical lines, and change \def to \renewcommand in the one we keep, but since different classes use \refname or \bibname, we better keep both lines to make things work robustly.

The drawback is that if you actually cite something that's also included in your nocite.tex, it will appear in both bibliographies. So basically consider this as a starting point; I hope someone will provide a better solution.