--- a/inst/__kernel_normal.m
+++ b/inst/__kernel_normal.m
@@ -1,25 +1,25 @@
-# Copyright (C) 2006 Michael Creel <michael.creel@uab.es>
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; If not, see <http://www.gnu.org/licenses/>.
+## Copyright (C) 2006 Michael Creel <michael.creel@uab.es>
+##
+## This program is free software; you can redistribute it and/or modify it under
+## the terms of the GNU General Public License as published by the Free Software
+## Foundation; either version 3 of the License, or (at your option) any later
+## version.
+##
+## This program is distributed in the hope that it will be useful, but WITHOUT
+## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+## details.
+##
+## You should have received a copy of the GNU General Public License along with
+## this program; if not, see <http://www.gnu.org/licenses/>.
 
-# __kernel_normal: this function is for internal use by kernel_density
-# and kernel_regression
-#
-# product normal kernel
-# input: PxK matrix - P data points, each of which is in R^K
-# output: Px1 vector, input matrix passed though the kernel
-# other multivariate kernel functions should follow this convention
+## __kernel_normal: this function is for internal use by kernel_density
+## and kernel_regression
+##
+## product normal kernel
+## input: PxK matrix - P data points, each of which is in R^K
+## output: Px1 vector, input matrix passed though the kernel
+## other multivariate kernel functions should follow this convention
 
 function z = __kernel_normal(z)