% 参考文献章节 \renewcommand\refname{参考文献} \begin{thebibliography}{0} \addcontentsline{toc}{section}{参考文献\tiny{\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad.\quad}} %\bibitem{Butterworth}Butterworth S. On the theory of filter amplifiers[J]. Wireless Engineer, 1930, 7(6): 536-541. % \bibitem{数字信号处理教材}程佩青. 数字信号处理教程[M]. 清华大学出版社有限公司, 2001. % %\bibitem{信号与系统}陈后金. 信号与系统[M]. 清华大学出版社有限公司, 2003. % %\bibitem{数字信号处理教材陈}陈后金. 数字信号处理.2版[M]. 高等教育出版社, 2008. \end{thebibliography}