https://www.vedomosti.ru/politics/news/2011/03/16/rektor_vshe_vyzval_navalnogo_na_slovesnuyu_duel_o_sisteme?utm_source=telegram&utm_campaign=share&utm_medium=social&utm_content=rektor_vshe_vyzval_navalnogo_na_slovesnuyu_duel_o_sisteme