当我使用 交叉引用 a longtable(带标签x.big)时\ref{x.big}，我得到的.tablenumber是 而不是tablenumber。如何去掉点？提前致谢。
\documentclass[11pt,authoryear,1p,times,sort&compress]{elsarticle}
\usepackage{longtable,array,ragged2e}
\newcolumntype{P}[1]{>{\RaggedRight}p{#1}}
\begin{document}
A cross-reference to table~\ref{tab:xbig}.
\begin{longtable}{|l|P{4cm}|P{6cm}|*{5}{c|}}
%% header and footer information
\caption{Papers used for bibliometric analysis}
\label{tab:xbig}\\
\hline
& 1st Author, Year, Journal & Title & LCS & TCS & TCS/t & LCS/t & AAC \\
\hline
\endfirsthead
\hline
\endlastfoot
%% body of table
1 & Fall Fs, 2020, Rev Dev Econ & Adoption and Use of Mobile Banking by Low-Income Individuals in Senegal & 0 & 0 & 0.00 & 0.00 & 0.00 \\
2 & Motta V, 2020, Int J Hosp Manag & Lending Technologies and Access to Finance for SMEs in the Hospitality Industry & 0 & 2 & 2.00 & 0.00 & 2.00 \\
\end{longtable}
\end{document}