fixed citation mistake in validation section
@@ -496,7 +496,7 @@ In this second step, only 2 codes have been compared so far. More outputs are ne
{\bf TODO: Describe additional comparisons I know of, but which were not part of the code comparison:} David compared the HMF of one of the cases to his own outputs. Elisabeth was planning on producing outputs for correlation function as well.
-Additionally, independent codes were utilized to test the accuracy of halo mass function predictions. For the halo mass function, we compare the value of $\sigma$, $\log(\sigma^{-1})$, and the value of the halo mass function in the form used in \citep{tinker08},
+Additionally, independent codes were utilized to test the accuracy of halo mass function predictions. For the halo mass function, we compare the value of $\sigma$, $\log(\sigma^{-1})$, and the value of the halo mass function in the form used in \citep{Tinker2008},
\begin{equation}
\log[(M^2/\bar{rho_m})dn/dM].
\end{equation}
