1. Study on Groundwater Evolution and Conservation in the Hebei Plain on the South of Beijing and Tianjin.PhD Thesis;Fei,2006
2. Study on Sustainable Utilization of Groundwater Resources in the Hebei Plain area.PhD Thesis;Liu,2007
3. Change in Water Reserve and its Influences in the North China Plain. PhD Thesis;Zhang,2013
4. Extreme value of groundwater evolution and its regulation and control in the North China Plain;Shi;Acta Geosci. Sin.,2004