《北史·列传·卷八十七》
军队渡过黄河之后，突厥兵又掠夺启人的部落，杨素率领骠骑范贵，在窟结谷东南，又打败突厥兵。
兵既渡河，贼复掠启人部落，素率骠骑范贵于窟结谷东南复破之。
After the troops crossed the Yellow River, the Turks plundered the Qiren tribes again. Yang Su led Fan Gui, the general of cavalry, to defeat the Turks southeast of Ku Jiegu.