# Elsarticle - Bibliography [closed]

I am trying to complile an elsarticle tex document.

\documentclass[preprint,review,12pt]{elsarticle}
\begin{document}
\section{References}
\bibliographystyle{model1-num-names}
\bibliography{sample}
\end{document}


I want to refer to an article which hasn't an year. In the sample.bib, I wrote

@article{JG,
author    = "J. Gindele and W. Novak and P. Fietkau and P. Neuwirth and W. Leitermann",
title     = "The Transaxle Powertrain of the Mercedes-AMG Sports Cars",
}


The problem is in the section of the refernce where I have those interogation points related with the article year

I used also

@misc{JG,
author    = "J. Gindele and W. Novak and P. Fietkau and P. Neuwirth and W. Leitermann",
title     = "The Transaxle Powertrain of the Mercedes-AMG Sports Cars",
}


But I have the same problem. How Can I remove this interrogation point from the year place

## closed as unclear what you're asking by Mensch, user13907, Arun Debray, Andrew, ZarkoJul 7 '16 at 0:14

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

• How can an article not have a year? If you want to change that, you'll have to change it in the .bst, unless you use some other reference manager (like biblatex). – Werner Feb 18 '16 at 17:46
• Since the piece wasn't published in a journal, it would be wrong to use the @article entry type. Using the type @misc seems far more appropriate. From a quick perusal of the paper, it was circulated last year. Thus, set the field year=2015 and BibTeX and LaTeX will be happy. – Mico Feb 18 '16 at 18:08