diff --git a/.classpath b/.classpath
index 7baa6abf9..4bc326c02 100644
--- a/.classpath
+++ b/.classpath
@@ -18,6 +18,7 @@
 	<classpathentry kind="lib" path="lib/secondstring-20100303.jar" sourcepath="lib-src/secondstring-20100303-sources.jar"/>
 	<classpathentry kind="lib" path="lib/ant-tools-1.8.0.jar" sourcepath="lib-src/ant-tools-1.8.0-sources.jar"/>
 	<classpathentry kind="lib" path="lib/vicino-1.1.jar" sourcepath="lib-src/vicino-1.1-sources.jar"/>
+	<classpathentry kind="lib" path="lib/commons-math-2.1.jar" sourcepath="lib-src/commons-math-2.1-sources.jar"/>
 	<classpathentry kind="lib" path="lib/poi-3.6.jar"/>
 	<classpathentry kind="lib" path="lib/poi-ooxml-3.6.jar"/>
 	<classpathentry kind="lib" path="lib/jython-2.5.1.jar"/>
diff --git a/LICENSE.txt b/LICENSE.txt
index f6144133f..38f3f6d1d 100644
--- a/LICENSE.txt
+++ b/LICENSE.txt
@@ -41,6 +41,7 @@ licenses/apache2.0.LICENSE.txt
     bzip2
     commons-lang
     commons-codec
+    commons-math
     jdatapath
     jetty
     jetty-util
diff --git a/lib-src/commons-math-2.1-sources.jar b/lib-src/commons-math-2.1-sources.jar
new file mode 100644
index 000000000..8d61e3e07
Binary files /dev/null and b/lib-src/commons-math-2.1-sources.jar differ
diff --git a/lib/commons-math-2.1.jar b/lib/commons-math-2.1.jar
new file mode 100644
index 000000000..43b4b369f
Binary files /dev/null and b/lib/commons-math-2.1.jar differ