《新五代史·列传·梁臣传第十》
刘知俊反叛，攻陷长安，梁太祖派刘郡和牛存节讨伐他，刘知俊逃到凤翔，梁太祖于是将长安改焉永平军，拜刘部为节度使。
刘知俊叛，陷长安，太祖遣掞与牛存节讨之，知俊走凤翔，太祖乃以长安为永平军，拜掞节度使。
Liu Zhijun rebelled, captured Chang’an, and the founding emperor of the Later Liang sent Liu Jun and Niu Cun to quell him. Liu Zhijun fled to Fengxiang, and the founding emperor of the Later Liang changed the name of Chang’an to Yongping Military Forces, confered Liu Jun as the governor.