diff --git a/README.md b/README.md
index bb89e6f..8f099c3 100644
--- a/README.md
+++ b/README.md
@@ -60,6 +60,7 @@ The IgG control is also fine, but because so little DNA is there, you might get
 
 **For cancer cells, an input control can be used to correct for copy-number bias.**
 
+* [tools used by IHEC consortium](http://ihec-epigenomes.org/research/tools/)
 
 [A quote from Tao Liu:](https://groups.google.com/forum/#!searchin/macs-announcement/h3k27ac/macs-announcement/9_LB5EsjS_Y/nwgsPN8lR-kJ) who develped MACS1/2