参考书目：将标签从 [作者姓名的一部分、年份] 更改为

Question

我在标记项目时遇到了问题 - 它们以 [作者姓名的一部分，年份] 的形式标记，而我需要正常编号形式。在下面的例子中，我有 [KA00]，但我只需要 [1]。有人能帮我吗？提前谢谢。

看起来像：

\documentclass[a4paper,twoside,12pt]{article}
\usepackage[margin=2cm]{geometry}
\usepackage[english]{babel}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{lmodern}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{bm}
\usepackage{indentfirst}
\usepackage{pstricks}

\usepackage{graphicx}

\usepackage[square,numbers]{natbib}

\renewcommand{\figurename}{Fig.}
\renewcommand{\thefigure}{\arabic{section}.\arabic{figure}}

\begin{document}

\cite{review}

\bibliographystyle{alpha}
\bibliography{citation} 

\end{document}

和 citation.bib：

@article{review,
title = "Magnetron sputtering: a review of recent developments and 
applications",
journal = "Vacuum",
volume = "56",
number = "3",
pages = "159 - 172",
year = "2000",
issn = "0042-207X",
doi = "https://doi.org/10.1016/S0042-207X(99)00189-X",
url = "http://www.sciencedirect.com/science/article/pii/S0042207X9900189X",
author = "P.J Kelly and R.D Arnell",
keywords = "Closed-field unbalanced magnetron sputtering",
keywords = "Pulsed sputtering",
keywords = "Variable magnetrons"
}