I am struggling with this issue for one day. I cannot get my biblatex working. It gives me the following error:

! LaTeX Error: Command \bibhang already defined.

My document is as follows:


\usepackage{lineno, hyperref}






\renewcommand{\vec}[1]{{\rm\bf #1}}
\newcommand{\tocite}[1]{{\color{red} (#1)}} %to revert it to \cite later on


\newcommand{\bluetext}[1]{{\color{blue} #1}}
\newcommand{\redtext}[1]{{\color{red} #1}}



The body of document 




I would like to work in Harvard style. But I don't know how to make works.

  • 5
    You should not use biblatex together with \bibliographystyle and bibliography. Use either the old bibtex system or biblatex. – Schweinebacke Jul 7 '17 at 16:21
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    elsarticle is importantly is focussed on journal publication so you should stick to what they mandate: here, it loads natbib which you should therefore be using. – Joseph Wright Jul 7 '17 at 16:22
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  • 3
    As Joseph (and the initial notes in the answers of the linked question) have explained: Do not use biblatex for a journal publication with elsearticle. Use the internally loaded natbib of the class as intended by the publisher. BTW: @<addressee> does only work without white space between @ and the use name of the addressee! – Schweinebacke Jul 7 '17 at 16:50
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    Note finally that Elsevier's guidelines in elsevier.com/authors/author-schemas/latex-instructions explicitly ask to use BibTeX and not biblatex. The documentation of elsarticle.cls (elsevier.com/__data/assets/pdf_file/0008/56843/elsdoc-1.pdf) states clearly that natbib is used, so you can't use biblatex. – moewe Jul 7 '17 at 20:25

You want to submit an article to a journal. Your publisher provides a LaTeX class, a manual to that class and an author guideline. You should use all of those with care.

The class already provides the bibliography package natbib. So you should not try to use biblatex instead. Because the publisher will not accept it. You have to use natbib. You must not use biblatex. This means also, that you have to remove \usepackage{biblatex} from your example. For your example the BibTeX style file elsarticle-harv.bst has to be available and the file with the bibliography database has to be named bibliography.bib (filename from the argument of the \bibliography{bibliography} command with appended mandatory extension .bib). And you have to run bibtex not biber!

The class already provides package graphicx. So you do not need nor should load package graphics.

Similar with your change of the fonts. Publishers almost ever use dedicated fonts for a journal. So font changes like loading (obsolete) package times will be removed. You should not load font packages without asking the editor. To use a Times-like font, use option times for class elsarticle.

Same with your changes of the layout. Journals always have a dedicated layout. You are either not allowed to change it or the changes will be removed in the workflow. So mostly is makes no sense to change \textwidth and \textheight nor \hoffset or \voffset. The final page layout depends on the journal type. Generally, for submissions with elsarticle you should use option preprint. There are other options that change the layout like 1p, 3p or 5p.

For a submissions I would also remove \graphicspath and put all files in one folder without subfolders. Because editors like is simple and flat. For the same reason use preamble definitions only, if you need them.

  • Thank you so much for your complete answer. I will take advantage of it. – KratosMath Jul 8 '17 at 15:05

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