\begin{table}%t1 \caption{\label{obs}Properties of the [CII] line observed toward BRI~0952-0115 compared with the CO(5--4) line observed by \cite{gui99}.} %\centerline {\small \begin{tabular}{l c c c c c c} \hline\hline Line & $\nu_{\rm rest}$ & $\nu_{\rm obs}$ & $z_{\rm line}$ & $\Delta V_{\rm FWHM}$ & $I$ & $\log(L)^a$ \\ & \multicolumn{2}{c}{[GHz]} & & $[$km~s$^{-1}]$&$[\rm Jy~km~s^{-1}]$ & [$L_{\odot}$]\\ \hline \noalign{\smallskip} [CII] ($\rm ^2P_{3/2}{-}^2P_{1/2}$) & 1900.54 & 349.776 & $4.4336 \pm 0.0003$ & $193 \pm 32$ & $33.6 \pm 4.9$ & $9.66 \pm 0.25$\\ CO (5--4) & 576.2679 & 106.055 & $4.4337 \pm 0.0006$ & $230\pm30$ &$0.91 \pm 0.11$ &$7.58 \pm 0.25$ \\ \hline \end{tabular}} \medskip $^a$ Log of the luminosity corrected for a lensing magnification of $\mu = 4.5$, while the error reflects the possible range in magnifications $\mu =2.5{-}8$ (see Appendix). \end{table}