diff --git a/src/edu/cornell/mannlib/vitro/webapp/visualization/coauthorship/EdgeComparator.java b/src/edu/cornell/mannlib/vitro/webapp/visualization/coauthorship/EdgeComparator.java
index f33adc54..524d88d6 100644
--- a/src/edu/cornell/mannlib/vitro/webapp/visualization/coauthorship/EdgeComparator.java
+++ b/src/edu/cornell/mannlib/vitro/webapp/visualization/coauthorship/EdgeComparator.java
@@ -1,3 +1,5 @@
+/* $This file is distributed under the terms of the license in /doc/license.txt$ */
+
 package edu.cornell.mannlib.vitro.webapp.visualization.coauthorship;
 
 import java.util.Comparator;
diff --git a/src/edu/cornell/mannlib/vitro/webapp/visualization/coauthorship/NodeComparator.java b/src/edu/cornell/mannlib/vitro/webapp/visualization/coauthorship/NodeComparator.java
index b47259bb..b74139d1 100644
--- a/src/edu/cornell/mannlib/vitro/webapp/visualization/coauthorship/NodeComparator.java
+++ b/src/edu/cornell/mannlib/vitro/webapp/visualization/coauthorship/NodeComparator.java
@@ -1,3 +1,5 @@
+/* $This file is distributed under the terms of the license in /doc/license.txt$ */
+
 package edu.cornell.mannlib.vitro.webapp.visualization.coauthorship;
 
 import java.util.Comparator;