Removed parts from Zhu citations.

src/op/c-star/order.tex

@@ -23,7 +23,7 @@
         \item There exists $\lambda \ge \norm{x}_A$ such that $\norm{\lambda - x}_A \le \lambda$. 
     \end{enumerate}
 \end{proposition}
-\begin{proof}[Proof, {{\cite[Lemma II.11.3]{Zhu}}}. ]
+\begin{proof}[Proof, {{\cite[Lemma 11.3]{Zhu}}}. ]
     (1) $\Leftrightarrow$ (2): \autoref{proposition:positive-spectrum}. 
 
     (2) $\Leftrightarrow$ (3): By assumption, $\sigma_A(x) \subset \real$, so \autoref{theorem:c-star-normal-spectral-radius} implies that