diff --git a/pub/dissertation/chapters/background.tex b/pub/dissertation/chapters/background.tex
index 7ab49ba..0e45bdf 100644
--- a/pub/dissertation/chapters/background.tex
+++ b/pub/dissertation/chapters/background.tex
@@ -29,6 +29,14 @@
 
 \subsection{Checklists}
 \begin{itemize}
+  \item Checklists are defined by the Civil Aviation Authority (CAA) as:
+    \blockquote{A set of written procedures/drills covering
+      the operation of the aircraft by the flight
+      crew in both normal and abnormal
+      conditions.~\ldots~The Checklist is
+      carried on the flight deck.}~\cite{caa:design}
+
+
   \item Checklists have been shown to aid in minimizing human errors~\cite{manifesto}
   
 
@@ -41,8 +49,6 @@
     \item The crew may also not be alerted to performance issues within the aircraft,
       that running the checklist may cause~\cite{caa:design}
   \end{itemize}
-
-  \item That is why testing checklists are important to avoid these situations
   
   \item However, it is important to note that checklists does not prevent the human
     factor of failure to use a checklist, like in the case of Northwest Airlines
@@ -50,6 +56,30 @@
     for aviation accidents in the United States, determined that
     \enquote{the probable cause of the accident was the flight crew's failure
     to use the taxi checklist to ensure that the flaps and slats were extended for takeoff.}~\cite{ntsb:NWA255}
+
+    \item These checklists can be bundled into a Quick Reference Handbook (QRH)
+      which the CAA defines it as:
+      \blockquote{A handbook containing procedures which
+        may need to be referred to quickly and/or
+        frequently, including Emergency and
+        Abnormal procedures. The procedures
+        may be abbreviated for ease of reference
+        (although they must reflect the procedures
+        contained in the AFM\footnote{
+          Aircraft Flight Manual - \enquote{The Aircraft Flight Manual produced by the
+          manufacturer and approved by the CAA.
+          This forms the basis for parts of the
+          Operations Manual and checklists. The
+          checklist procedures must reflect those
+          detailed in the AFM.}~\cite{caa:design}
+          }).
+        The QRH is often
+        used as an alternative name for the
+        Emergency and Abnormal Checklist.~\cite{caa:design}}
+
+  \item Therefore, as there may be a need for the checklist to be
+    referenced quickly and potentially in emergency situations,
+    these checklists should be tested for flaws 
 \end{itemize}
 
 
diff --git a/pub/dissertation/dissertation.pdf b/pub/dissertation/dissertation.pdf
index 3c6dfce..4697a57 100644
Binary files a/pub/dissertation/dissertation.pdf and b/pub/dissertation/dissertation.pdf differ
diff --git a/pub/dissertation/dissertation.sum b/pub/dissertation/dissertation.sum
index 8f9d0a4..b60bc6a 100644
--- a/pub/dissertation/dissertation.sum
+++ b/pub/dissertation/dissertation.sum
@@ -1 +1 @@
-4751
+4915
diff --git a/pub/dissertation/dissertation.tex b/pub/dissertation/dissertation.tex
index 8bf0e68..2c0bdec 100644
--- a/pub/dissertation/dissertation.tex
+++ b/pub/dissertation/dissertation.tex
@@ -133,7 +133,6 @@ with areas of improvement for me throughout the project.
 \subfile{chapters/appendix/database.tex}
 
 % References
-\nocite{*}
 \printbibliography[heading=bibintoc, title={References}]
 
 \end{document}