Yu Du has written:
'Chun qiu jing zhuan ji jie'
Ang Du has written: 'San yu zhui bi'
fu Shan has written: 'Du Du shi yu de'
Linzhi Du has written: 'Gui yin yu wen hua'
Shiwei Du has written: 'Gei Yu Hua ba ya'
Xingzhong Yu has written: 'Fa li xue jian du' -- subject(s): Jurisprudence
Jingguo. Du has written: 'Zuo Zongtang yu Xinjiang' -- subject(s): Biography, History, Statesmen
Yufang Du has written: 'Hu Qiaomu yu Zhong gong dang shi yan jiu ='
Qichang Yu has written: 'Gu du bian qian ji lue (Jiujing jingwu biji congshu)'
Hanping Yan has written: 'Zhi du chuang xin yu qu yu jing ji fa zhan'
Shuying. Du has written: 'Li Yu mei xue si xiang yan jiu (zeng ding ben) ='
Degang Yu has written: 'Gang di zu zhi qiang du xue' -- subject(s): Steel, Metallography, Ductility
Yangdong. Li has written: 'Basic yu yan zi xue du ben'