diff --git a/Articles-and-Papers.adoc b/Articles-and-Papers.adoc
index f82b64b..0de492a 100644
--- a/Articles-and-Papers.adoc
+++ b/Articles-and-Papers.adoc
@@ -18,6 +18,8 @@ Apostolos Anagnostopoulos
 [[cheat-sheet]]
 == Articles-and-Papers
 
+[[cheat-sheet]]
+== Articles-and-Papers
 
 Networked objects and smart devices 
 https://www.theinternetofthings.eu/sites/default/files/Rob%20van%20Kranenburg/networked_objects.pdf[^]