wip(thesis): switch to parenthesized citation in abbreviations

src/thesis/abbreviations.tex

@@ -6,9 +6,9 @@
   \centering
   \begin{tabularx}{\textwidth} {ll}
     GUM & Guide to the expression of uncertainty in
-    measurement~\cite{jcgm_evaluation_2009} \\
+    measurement~\citep{jcgm_evaluation_2009} \\
     VIM & International vocabulary of metrology — Basic and general concepts and
-    associated terms~\cite{jcgm_international_2012}
+    associated terms~\citep{jcgm_international_2012}
     \label{tab:abbreviations}
   \end{tabularx}
 \end{table}