diff --git a/README.md b/README.md
index a36684e..4601445 100644
--- a/README.md
+++ b/README.md
@@ -30,4 +30,7 @@ This folder contains scripts and data for automated testing of the training scri
 
 ## references
 
-
+<a id="1">[1]</a>
+Philipp Koehn.
+*Europarl: A Parallel Corpus for Statistical Machine Translation.*
+MT Summit 2005.