diff --git a/TODO b/TODO
index c27d237..411b836 100644
--- a/TODO
+++ b/TODO
@@ -25,15 +25,15 @@ Examples:
 Reordering:
 	Sloan ordering
 	Biclustering
-	Contingency tables methods (check):
-		PCA ordering
-		Correspondence analysis
 	Chun-Hou Chen methods: http://gap.stat.sinica.edu.tw/Papers/GAP_2002.pdf
 		 Elliptical
 	Koren multiscale ACE: http://dx.doi.org/10.1109/INFVIS.2002.1173159
 	      Is it a faster spectral order?
 
 Reordering done:
+	Contingency tables methods:
+		PCA ordering
+		Correspondence analysis
 	Spectral ordering
 	Improved the barycenter heuristic with swaps
 	Tables/bipartite networks