• Retrieved 2010-09-01. "公元849年内蒙古包头东地震地表破裂带及地震参数讨论" by 聂宗笙, 吴卫民, and 保起 "Un-Habitat.:. | 包头市的震后重建、经济适用房和城市绿化项目". Archived from the original on 2012-07-09...
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