当我在 LaTeX/Beamer 中引用参考文献时，右括号没有变成蓝色。发生这种情况的原因是什么？
2004 年以后请参见右括号。
参见下面的代码
\documentclass{beamer}
\usepackage{natbib}
\usetheme{CambridgeUS}
\usepackage{hyperref}
\hypersetup{
colorlinks=true,
allcolors=blue
}
\title{Piling Platform Design}
\author{ZA}
\date{\today}
\institute{ABC}
\begin{document}
\begin{frame}
\titlepage
\end{frame}
\section{Two-Layer System}
\begin{frame}[t]{Bearing Capacity for Two-Layer System}
If the above calculated bearing capacity is less than the maximum ground pressure value for either Loading Case 1 or 2, then a piling platform should be provided. Suitable material for constructing the platform would be granular material such as crushed sandstone, recycled gravel or crushed rock. The platform can further be reinforced with a layer of geogrid. The thickness of the platform will depend on the maximum ground pressure of the rig, the bearing capacity of the ground and the material properties of the platform.\\
\vspace{0.25cm}
Two-layer bearing capacity formula suggested by \cite{skinner2004working} can be used to determine the thickness of the piling platform. Meyerhof assumed that the footing will punch through the upper firm/dense layer into the bottom soft/loose layer.
\end{frame}
\section{References}
\begin{frame}[t]{References}
\bibliographystyle{agsm}
\bibliography{references.bib}
\end{frame}
\end{document}