Consider the MWE below. If we use article + newclude the bibliography works, elsarticle + newclude it does not.
My advise to the user to came by with this issue was not to use newclude, but now I'm curious, what is wrong?
% works with article + newclude
%\documentclass{article}
% does not work with elsarticle + newclude
\documentclass{elsarticle}
\usepackage{newclude}
\begin{document}
\cite{t}
\begin{thebibliography}{9}
\bibitem{t} Test
\end{thebibliography}
\end{document}
Here is what I end up with in the elsarticle + newclude case:

elsarticleis from 2009, whereasnewcludeis from 1999 or 2000 and hasn't been updated so far – Jun 25 '15 at 08:19