Based on: The WordPress Rus filename translit plugin by fixed77. Russian filename and link (from title) translitter for WordPress.
The Russian filename and link (from title) translitter for WordPress plugin is copyright © 2013 with GNU General Public License by dmf_tuva.
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.