# Odd parentheses using elsarticle document class

I am generally a user of natbib but the elsarticle document class (required to submit to a journal) won't allow it so I am using amsrefs and faced with a very strange situation. Using the below code:

\documentclass[preprint,12pt,authoryear]{elsarticle}

\usepackage[author-year]{amsrefs}

\begin{document}

Bundling can be used to incentivise consumers to alter their purchasing habits \cite{Adams1976}.

\newpage

\bibliographystyle{elsarticle-harv}

\bibliography{Mendeley2}

\end{document}

\endinput


Yields the result

This sort of thing never occurred to me when using natbib. Any help would be massively appreciated.

• amsrefs is an alternative to bibtex or biblatex not something to be used with a bib file. (It is hardly ever used in practice I suspect) (or if it is used with bibtex it has to be used with its special conversion bib style) (that is one of amsra.bst amsrn.bst amsrs.bst amsru.bst amsry.bst – David Carlisle May 8 '17 at 19:13
• @DavidCarlisle - The OP's claim that the elsarticle document class doesn't allow natbib is incorrect. – Mico May 8 '17 at 19:56
• I'm wondering if perhaps you tried to load natbib with package options that conflicted with the package options used when elsarticle loaded natbib. That would've generated a warning about an option clash, which might've caused some confusion. – Nicola Talbot May 8 '17 at 20:02
• Thank you all for your responses. @DavidCarlisle was correct in that natbib does indeed work with elsarticle; I had to make some additional tweaks to my normal template to make it work (as per Nicola's post). – Tim B May 8 '17 at 20:06

You wrote:

... but the elsarticle document class ... won't allow [natbib] ...

On which basis do you make this claim? In fact, the elsarticle document class loads natbib automatically -- a fact which is mentioned on page 1 of the user guide of the elsarticle class. One doesn't generally call this a "won't-allow" situation, right? (Were you maybe confusing elsarticle with its predecessor, named elsart?) Conversely, as @egreg has pointed out in a comment, the amsrefs package is not suitable for the elsarticle document class -- and hence shouldn't be loaded to begin with.

If you use the elsarticle-harv bibliography style, just be sure to provide authoryear as one of the document class options.

\RequirePackage{filecontents}
\begin{filecontents}{mybib.bib}
author = "James Adams and Janet Yellen",
title  = "Commodity Bundling and the Burden of Monopoly",
journal= "Quarterly Journal of Econonomics",
year   = 1976,
volume = 90,
number = 3,
pages  = "475-498",
}
\end{filecontents}

\documentclass[preprint,12pt,authoryear]{elsarticle}
\bibliographystyle{elsarticle-harv}
\begin{document}
\noindent

• I'd also point out that, on the contrary, amsrefs should not be loaded with elsarticle. – egreg May 8 '17 at 20:07