[Tex/LaTex] IEEEConf Bibliography does not work

Question

I am using the template entitled "Preparation of Papers for IEEE Sponsored Conferences \& Symposia", in the overleaf. I am trying to use a bibtex file, named ref.bib instead of the "bib items".

In the end of document, I put the following:

\bibliographystyle{IEEEconf}
\bibliography{ref}

But the section References does not appear. I imagine that is lacking the IEEEconf.bst file, but I do not know where I can find the correct one.

Here is the warning showed:

(no line number): This is BibTeX, Version 0.99d (TeX Live 2016/Debian)
Capacity: max_strings=100000, hash_size=100000, hash_prime=85009 The
top-level auxiliary file: main.aux I couldn't open style file
IEEEconf.bst —line 45 of file main.aux : \bibstyle{IEEEconf : } I'm
skipping whatever remains of this command I found no style
file—while reading file main.aux You've used 13 entries, 0
wiz_defined-function locations, 110 strings with 744 characters,

Thanks for the help.

Answer 1

I added a file named IEEEtran.bst to my Overleaf project, using this content.