diff --git a/pkgs/redex-pkgs/redex-examples/redex/examples/delim-cont/README.txt b/pkgs/redex-pkgs/redex-examples/redex/examples/delim-cont/README.txt
index 1e33c27010..cf44a9f695 100644
--- a/pkgs/redex-pkgs/redex-examples/redex/examples/delim-cont/README.txt
+++ b/pkgs/redex-pkgs/redex-examples/redex/examples/delim-cont/README.txt
@@ -1,3 +1,6 @@
+This model is from the paper _Adding Delimited and Composable Control
+to a Production Programming Environment_ from ICFP 2007.
+
 To run the tests using the model:
 ---------------------------------