《资治通鉴·唐纪·唐纪六十九》
不久，唐僖宗任命东都留守李蔚以同平章事衔，充任河东节度使。
寻以东都留守节蔚同平章事，充河东节度使。
Soon, Emperor Xizong appointed Li Wei, the governor of the Eastern Capital, as deputy prime minister and acting military governor of Hedong.