《旧唐书·本纪·卷二十》
四月二十六日，魏博罗绍威奏说： 臣管辖的博州府聊城县，以及武阳、莘县、武水，博平、高堂等五县，都在黄河东岸，该地区的乡村百姓渡河纳税不便，和天平军辖区边界相连，请割属于郓州。 
戊申，魏博罗绍威奏： 臣当管博州聊城县、武阳莘县武水博平高堂等五县，皆于黄河东岸，其乡村百姓渡河输税不便，与天平军管界接连，请割属郓。 
On April 26, Luo Shaowei of Weizhou reported: Lizhou Prefecture, Liaocheng County, Wuyang, Xin County, Wushui, Boping, and Gaotang County under my jurisdiction are all on the east bank of the Yellow River. It is inconvenient for the villagers in the area to cross the river to pay taxes, and the border is connected with the Tianping Army. Jurisdiction, please cut and belong to Yizhou.