diff --git a/introduction/introduction.tex b/introduction/introduction.tex
index 6543495..7d53017 100644
--- a/introduction/introduction.tex
+++ b/introduction/introduction.tex
@@ -559,8 +559,8 @@ to reduce the possibility of this last condition.
 
 \section{Motivation for developing a formal methodology}
 
-A feature of many safety critical systems specifications,
-including EN298, EN230 \cite{en298} \cite{en230} 
+A feature of some newer safety critical systems standards,
+including  the gas burner standard EN298~\cite{en298}[Section 9] 
 is to demand, 
 at the very least that single failures of hardware
  or software cannot 
diff --git a/standards/standards.tex b/standards/standards.tex
index 6e4d75b..6bd23b4 100644
--- a/standards/standards.tex
+++ b/standards/standards.tex
@@ -101,6 +101,8 @@ Stabndards of ten reference other - i.e. EMC testing in EN298 refers toEN blah b
 
 \section{Standard in detail: EN298}
 
+Section 9. Second faults, pushing the requirements for static testing.
+
 \section{Standard in detail: UL1998}
 
 \section{Standard in detail: EN230}