Yong Lan (2007). The Study about the Relation between the Development of Social economic and Environment during the Period of "Huguang People Migrating into Sichuan"from Geographic Names of Sichuan.
Yong Lan (2006). Influences on the Transit of Covellite Along the Way from Yunnan to Beijing in the Qing Dynasity——Also Discussing the Project of Transit Resources from Southwest to Eastern China in the Ming and Qing Dynasities.