diff --git a/COPYING b/COPYING
index caeca07..88798ab 120000
--- a/COPYING
+++ b/COPYING
@@ -1 +1 @@
-/usr/share/automake-1.14/COPYING
\ No newline at end of file
+/usr/share/automake-1.15/COPYING
\ No newline at end of file
diff --git a/ChangeLog b/ChangeLog
index b427b51..74c5e97 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2017-01-09 16:11  
+
+	* [r13] COPYING, ChangeLog, INSTALL, src/neuron.hxx,
+	  test/neuron.cxx:
+	  first try of propagation
+
 2017-01-08 08:55  
 
 	* [r12] bootstrap.sh, debian/changelog.in:
diff --git a/INSTALL b/INSTALL
index f812f5a..ddcdb76 120000
--- a/INSTALL
+++ b/INSTALL
@@ -1 +1 @@
-/usr/share/automake-1.14/INSTALL
\ No newline at end of file
+/usr/share/automake-1.15/INSTALL
\ No newline at end of file