diff --git a/tex/references.tex b/tex/references.tex
index 8dce060..830ab1b 100644
--- a/tex/references.tex
+++ b/tex/references.tex
@@ -5,4 +5,7 @@
 \docStart
 \section{References} \label{sec:references}
 Do it! It is good! Use prefixes like sec:
+\subsection{Theorem-like environments}
+Be better than me, use autoref, thmtools, cleveref or
+something else. Write here how to use it.
 \docEnd