我正在使用回忆录课程撰写论文。
我有一个主程序，可以调用所有需要的文件。
其中一个文件是“摘要”，它调用两个具有各自参考书目的不同 tex 文件（我需要用两种语言提供摘要，英语和丹麦语）。
问题是第二个参考书目（丹麦语）没有出现（参考文献放置完美，但它们交叉引用英文摘要的参考书目环境）。
编辑：丹麦文摘要似乎一直在查看英文 bib 文件。只有当参考文献在英文摘要中被引用时，才会放置参考文献，否则不会显示。如果两个 bib 文件中的参考文献关键字不同（例如，下面示例中的 test1 和 test1d），则参考文献将无法正确放置。
附上 MWE
\documentclass[b5paper,10pt,authoryear,longnamesfirst]{memoir}
\begin{filecontents}{englishsummary.bib}
@Article{test1,
author = {Test Testesen},
title = {Test},
journal = {Test journal},
year = {2018},
}
@Article{test2,
author = {Test T. Test},
title = {TestB},
journal = {Journal of testing},
year = {2018},
}
\end{filecontents}
\begin{filecontents}{danishsummary.bib}
@Article{test1d,
author = {Test Testesen},
title = {Test},
journal = {Test journal},
year = {2018},
}
@Article{test2d,
author = {Test T. Test},
title = {TestB},
journal = {Journal of testing},
year = {2018},
}
\end{filecontents}
% preamble
\let\newfloat\undefined
\usepackage[capbesideposition={top,center},capposition=top]{floatrow}
\usepackage[scaled=0.75]{beramono}
\usepackage[utf8]{inputenc}
\usepackage[english,danish]{babel}
\usepackage{microtype}
\usepackage{bibunits}
\usepackage[authoryear,sectionbib,longnamesfirst]{natbib}
\setlrmarginsandblock{*}{1.228571in}{0.75}
\setulmarginsandblock{1in}{*}{1.2}
\nouppercaseheads
\makeoddhead{headings}{\small\scshape\rightmark}{}{\small\thepage}
\makeevenhead{headings}{\small\thepage}{}{\small\scshape\leftmark}
\linespread{1.1}
\usepackage{cleveref}
% END PREAMBLE
\begin{document}
\selectlanguage{english}
\frenchspacing
\tableofcontents*
%SUMMARY
\let\oldbibsection\bibsection
\let\oldbibsection\bibsection
\renewcommand\bibsection{\section*{\bibname}}
% English summary
\begin{bibunit}[elsarticle-harv]
\chapter*[Summary]{Summary}
\addcontentsline{toc}{chapter}{Summary}
some english text \citep{test1} and \cite{test2}.
%\clearpage
\putbib[englishsummary.bib]
\end{bibunit}
% END OF English SUMMARY
% Danish summary
\begin{bibunit}[elsarticle-harv_danish]
\chapter*[Danish summary]{Danish summary}
\addcontentsline{toc}{chapter}{Danish summary}
\selectlanguage{Danish}
\frenchspacing
\setcounter{footnote}{0}
%DANISH SUMMARY
some danish text \citep{test1d} and \cite{test2d}.
\clearpage
\putbib[danishsummary.bib]
\end{bibunit}
% END OF DANISH SUMMARY
\selectlanguage{english}
\frenchspacing
\let\bibsection\oldbibsection
\end{document}
答案1
以下是 OP 当前 MWE 的重新编辑（20180831 12:10）
\documentclass[oneside]{memoir}
\usepackage{filecontents}
\begin{filecontents*}{englishsummary.bib}
@Article{test1,
author = {Test Testesen},
title = {Test english},
journal = {Test journal},
year = {2018},
}
@Article{test2,
author = {Test T. Test},
title = {TestB english},
journal = {Journal of testing},
year = {2018},
}
\end{filecontents*}
\begin{filecontents*}{danishsummary.bib}
@Article{test1d,
author = {Test TestesenD},
title = {Test danish},
journal = {Test journal},
year = {2018},
}
@Article{test2d,
author = {Test T. TestD},
title = {TestB danish},
journal = {Journal of testing},
year = {2018},
}
\end{filecontents*}
\usepackage[utf8]{inputenc}
\usepackage[danish,english]{babel}
\usepackage{bibunits}
\usepackage[authoryear,sectionbib,longnamesfirst]{natbib}
\begin{document}
\selectlanguage{english}
\tableofcontents*
% English summary
\begin{bibunit}[plainnat]
\chapter*[Summary]{Summary}
some english text \citep{test1} and \cite{test2}.
%\clearpage
\putbib[englishsummary]
\end{bibunit}
% END OF English SUMMARY
% Danish summary
\begin{bibunit}[plainnat]
\chapter*[Danish summary]{Danish summary}
\addcontentsline{toc}{chapter}{Danish summary}
\selectlanguage{Danish}
\frenchspacing
some danish text \citep{test1d} and \cite{test2d}.
\putbib[danishsummary]
\end{bibunit}
\end{document}
据我所知，在我的系统上引用是正确的。我添加了包filecontents并切换到该环境的星号版本，然后如果我们在文本文件中更改它们，这两个 bibfiles 将在磁盘上发生变化。
评论太长了，这里是一篇非常小的 MWE 回忆录，与bibunits
记得在所有文件上运行 bibtex buX.aux（我使用该latexmk工具，它会自动检测buX.aux文件并bibtex在其上运行
那么你的文档上到底存在什么问题？
\documentclass[a4paper]{memoir}
\begin{filecontents}{mytest.bib}
@Article{test1,
author = {Test Testesen},
title = {Test},
journal = {Test journal},
year = {2018},
}
@Article{test2,
author = {Test T. Test},
title = {TestB},
journal = {Journal of testing},
year = {2018},
}
\end{filecontents}
\usepackage[danish,english]{babel}
\usepackage{bibunits}
\usepackage[authoryear,sectionbib,longnamesfirst]{natbib}
\begin{document}
\tableofcontents*
%English summary
\begin{bibunit}[plainnat]
\chapter*[Summary]{Summary}
\addcontentsline{toc}{chapter}{Summary}
some text
\cite{test1}
\putbib[mytest]
\end{bibunit}
% Danish summary
\begin{bibunit}[plainnat]
\chapter*[Danish summary]{Danish summary}
\addcontentsline{toc}{chapter}{Danish summary}
\selectlanguage{danish}
\frenchspacing
some text
\cite{test2}
\putbib[mytest]
\end{bibunit}
\end{document}