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参考文献末尾有多余的逗号

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参考文献末尾有多余的逗号

我遇到一个问题，每当我的参考书目中有多个具有相同“作者”的条目时，它们末尾都会有一个额外的逗号。你能告诉我如何去掉它们吗

以下是条目示例 在此处输入图片描述

结果如下 在此处输入图片描述

正如建议的那样，这是我的乳胶文件

 % Set up the document
    \documentclass{book}  % Use the "Thesis" style, based on the ECS Thesis style by Steve Gunn

    % Include any extra LaTeX packages required
    \usepackage[square, numbers, comma, sort&compress]{natbib}  % Use the "Natbib" style for the references in the Bibliography
    \usepackage{verbatim}  % Needed for the "comment" environment to make LaTeX comments
    \usepackage{vector}  % Allows "\bvec{}" and "\buvec{}" for "blackboard" style 6
    \usepackage{amssymb} 
    \usepackage{caption,sansmath}
    \usepackage{multirow} 
    \usepackage{soul}
    \usepackage{fancyhdr}
    \usepackage{pdfpages}
    \usepackage{hyperref}
    \usepackage{pgfplots}
    \usepackage{tabularx,ragged2e,booktabs,caption}

    %Fixing many float unprocessed
    \usepackage[section] {placeins}


    \usepackage[T1]{fontenc}    %COMMENT OUT THE FONT
    %\usepackage[bitstream-charter]{mathdesign}
    \usepackage[expert]{mathdesign}

    \usepackage{textcomp}
    \usepackage{charter}



    \begin{document}

    Two problems. One is that if two references have the same author, there is an extra comma at the end of those reference \cite{Ackermann01}. Now I cite another whose author is the same with the previous - Please have a look at the bibliography the \cite{Ackermann02}. 


     Another one with different author \cite{Safari}


    \label{Bibliography}
    \lhead{\emph{Bibliography}}  % Change the left side page header to "Bibliography"
    \bibliographystyle{unsrtnat}  % Use the "unsrtnat" BibTeX style for formatting the Bibliography
    \bibliography{Bibliography}  % The references (bibliography) information are stored in the file named "Bibliography.bib"

    \end{document}  % The End

这是我的书目文件，

@unpublished{Safari,
        author = "Rollin Safari",
        title = "A hunt",
        note = "Available at \url{www.rollin-wild.com/}. Last accessed on May 1$^{st}$ 2013"}   

@unpublished{Ackermann01,
        author = "Pascal Ackermann",
        title = "Lady {F}inwe",
        note = "Available at \url{http://pascal.ackermann.free.fr/}. Last accessed on May 1$^{st}$ 2013"}   

@unpublished{Ackermann02,
        author = "Pascal Ackermann",
        title = "Fille {F}leur",
        note = "Available at \url{http://pascal.ackermann.free.fr/}. Last accessed on May 1$^{st}$ 2013"}

答案1

你能为同一作者的这些条目指定一个年份吗？你描述的问题就消失了：

\documentclass{book}

\usepackage{filecontents}
\begin{filecontents}{\jobname.bib}
@unpublished{Safari,
    author = "Rollin Safari",
    title = "A hunt",
    note = "Available at \url{www.rollin-wild.com/}. Last accessed on May 1$^{st}$ 2013",
  year = 2000,
}

@unpublished{Ackermann01,
    author = "Pascal Ackermann",
    title = "Lady {F}inwe",
    note = "Available at \url{http://pascal.ackermann.free.fr/}. Last accessed on May 1$^{st}$ 2013",
  year = 2000,
}

@unpublished{Ackermann02,
    author = "Pascal Ackermann",
    title = "Fille {F}leur",
    note = "Available at \url{http://pascal.ackermann.free.fr/}. Last accessed on May 1$^{st}$ 2013",
  year = 2000,
}

\end{filecontents}

\usepackage[square, numbers, comma, sort&compress]{natbib}
\usepackage[T1]{fontenc}

\begin{document}

% this problem disappears if you assign a year field to these entries
Two problems. One is that if two references have the same author,
there is an extra comma at the end of those reference
\cite{Ackermann01}. Now I cite another whose author is the same
with the previous - Please have a look at the bibliography the
\cite{Ackermann02}.

Another one with different author \cite{Safari}.  

\bibliographystyle{unsrtnat}
\bibliography{\jobname}

\end{document}

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