《资治通鉴·唐纪·唐纪二十八》
许钦澹被迫率部撤入渝关，可突干拥立李娑固的堂弟李郁干为王，并派遣使者入朝请罪。
许钦澹移军入渝关，可突干立娑固从父弟郁干为主，遣使请罪。
Xu Qindan was forced to lead his troops into the Yuguan, and Ketugan supported Li Shaogu's younger brother Li Yugan as king, and sent envoys to the court to plead guilty.