diff --git a/2022-03-replication/replication.org b/2022-03-replication/replication.org
index 3ebc2e3..6bddf31 100644
--- a/2022-03-replication/replication.org
+++ b/2022-03-replication/replication.org
@@ -198,10 +198,22 @@ a.csv: gen.py
 + More flexible than Rmarkdown
 + Easy to change document class
 + Can include many different programming languages within the one document
-* Problems: using a different latex class
-#+BEGIN_SRC org :exports code
-  
+* Using a different latex class
+1. Your org mode document will need =#+latex_class: IEEEtran=
+2. You'll need to configure Emacs using something like:
+#+BEGIN_SRC emacs-lisp
+(add-to-list 'org-latex-classes
+             '("IEEEtran"
+               "\\documentclass\[10pt\]\{IEEEtran\}"
+               ("\\section\{%s\}" . "\\section*\{%s\}")
+               ("\\subsection\{%s\}" . "\\subsection*\{%s\}")
+               ("\\subsubsection\{%s\}" . "\\subsubsection*\{%s\}")
+               ("\\paragraph\{%s\}" . "\\paragraph*\{%s\}")
+	       ))
+
 #+END_SRC
+* Formatting numbers
+
 
 * Further reading