Tài liệu tham khảo WikiPedia: VL11 http://www.glmf.ge/?lang=eng&action=page&p_id=29 http://trid.trb.org/view.aspx?id=51921 http://www.tevz.ru/ru/articles/14/ https://web.archive.org/web/20110405191402/http://... https://commons.wikimedia.org/wiki/Category:VL11?u... https://www.uz.gov.ua/en/press_center/up_to_date_t...
