# Citation in two column document [closed]

I'm using the Springer template by \documentclass[twocolumn]{svjour3}. I'd like to use the citation by \cite{} with the column break. As can be seen in the figure below the citations are pushing the limits.

\RequirePackage{fix-cm}
\documentclass[twocolumn]{svjour3}          % twocolumn
\smartqed  % flush right qed marks, e.g. at end of proof
\usepackage{graphicx}

\begin{document}

\title{Insert your title here%\thanks{Grants or other notes
%about the article that should go on the front page should be
%placed here. General acknowledgments should be placed at the end of the article.}
}
\subtitle{Do you have a subtitle?\\ If so, write it here}

\author{First Author         \and
Second Author %etc.
}

%\authorrunning{Short form of author list} % if too long for running head

\institute{F. Author \at
Tel.: +123-45-678910\\
Fax: +123-45-678910\\
\email{fauthor@example.com}           %  \\
%             \emph{Present address:} of F. Author  %  if needed
\and
S. Author \at
}

\end{document}


• Do please tell us which bibliography style you employ and which citation management package (if any) you load. Incidentally, the sample code you posted doesn't contain a single \cite instruction and hence can't be used to investigate the problem you're trying to fix. – Mico Nov 6 '19 at 18:19
• The bibliography style used is \bibliographystyle{spbasic}. – Wagner Jorge Nov 6 '19 at 18:35
• Do you employ the natbib citation management package? (You should.) – Mico Nov 6 '19 at 20:25
• @Mico this solve the problem, thanks. – Wagner Jorge Nov 7 '19 at 1:49
• I'm voting to close this question as the formatting issue was solved in the comments. (The OP needed to load the natbib package.) – Mico Nov 7 '19 at 5:12

\usepackage{breakcites}


to your preamble to make the citation markers break at the end of the lines. If this does not work, see more options here. Here is an example, modified from the SVJour3 template here:

%%%%%%%%%%%%%%%%%%%%%%% file template.tex %%%%%%%%%%%%%%%%%%%%%%%%%
%
% This is a general template file for the LaTeX package SVJour3
% for Springer journals.          Springer Heidelberg 2010/09/16
%
% Copy it to a new file with a new name and use it as the basis
% for your article. Delete % signs as needed.
%
% This template includes a few options for different layouts and
% content for various journals. Please consult a previous issue of
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
\RequirePackage{fix-cm}
\documentclass[twocolumn]{svjour3}          % twocolumn
%
\smartqed  % flush right qed marks, e.g. at end of proof
%
\usepackage{graphicx}
\usepackage{breakcites}
\usepackage{blindtext}
%
\begin{document}

%\thanks{Grants or other notes
%about the article that should go on the front page should be
%placed here. General acknowledgments should be placed at the end of the article.}

%\titlerunning{Short form of title}        % if too long for running head

\author{First Author         \and
Second Author %etc.
}

%\authorrunning{Short form of author list} % if too long for running head

\institute{F. Author \at
Tel.: +123-45-678910\\
Fax: +123-45-678910\\
\email{fauthor@example.com}           %  \\
%             \emph{Present address:} of F. Author  %  if needed
\and
S. Author \at
}

% The correct dates will be entered by the editor

\maketitle

\begin{abstract}
Too abstract.
\end{abstract}

\section{Citations in left column}
\label{sec:1}
Text with citations that break lines \cite{RefB} and \cite{RefJ}.

\section{Blind text}
\blindtext[2]

\section{Citations in right column}
These citations also break properly~\cite{RefJ} and~\cite{RefB}.

\begin{thebibliography}{Author, 2017}
%
% and use \bibitem to create references. Consult the Instructions
% for authors for reference list style.
%
\bibitem[Extremely Long Author Name, 2017]{RefJ}
% Format for Journal Reference
Author, Article title, Journal, Volume, page numbers (2017)
% Format for books
\bibitem[Slightly Shorter Author Name, 2018]{RefB}
Author, Book title, page numbers. Publisher, place (year)
% etc
\end{thebibliography}

\end{document}
% end of file template.tex


• Loading the breakcites package won't solve the OP's formatting issues, as they were caused by a failure to load the natbib package. – Mico Nov 7 '19 at 5:13