Вот еще статья:http://www.rotfront.su/%D0%BF%D0%BE%D0%B3%D1%80%D0%BE%D0%BC-%D0%BC%D0%B5%D0%B4%D0%B8%D1%86%D0%B8%D0%BD%D1%8B-%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D1%8F-%D0%B8-%D0%BA%D1%83%D0%BB%D1%8C%D1%82%D1%83/