гы гы..википедия все знает http://ru.wikipedia.org/wiki/%D0%9E%D0%BF%D0%B8%D1%81%D0%B0%D0%BD%D0%B8%D0%B5_%D1%81%D0%B5%D0%B7%D0%BE%D0%BD%D0%BE%D0%B2_%D1%82%D0%B5%D0%BB%D0%B5%D1%81%D0%B5%D1%80%D0%B8%D0%B0%D0%BB%D0%B0_%C2%AB%D0%A1%D0%B0%D0%BD%D1%82%D0%B0-%D0%91%D0%B0%D1%80%D0%B1%D0%B0%D1%80%D0%B0%C2%BB