1. Cai, L. G., Mao, Z., Fang, S. X. & Liu, H. S. The Yellow River basin and case study areas. In: Pereira, L. S., Cai, L. G., Musy, A., Minhas, P. S. (Eds) Water Saving in the Yellow River Basin: Issue and Decision Support Tools in Irrigation. China Agricultural Press, Beijing, pp, 13–34 (2003).
2. Li, C. H., Yang, Z. F. & Wang, X., Trends of annual natural runoff in the Yellow River basin. Water International 29(4), 447–454 (2004).
3. Bargahei, K. & Mosavi, S. A. A. Effects of Shallow Water Table and Groundwater Salinity on Contribution of Groundwater to Evapotranspiration of Safflower (Carthamus tinctorius L.) in Greenhouse. Science and Technology of Agriculture and Natural Resources 10(3), 59–70 (in Persian) (2006).
4. Ghamarnia, H., Golamian, M., Sepehri, S., Arji, I. & Norozpour, S. The contribution of shallow groundwater by safflower (Carthamus tinctorius L.) under high water table conditions, with and without supplementary irrigation. Irrigation Science 31, 285–299 (2013).
5. Kahlown, M. A., Ashraf, M. & Zia-ul-Haq. Effect of shallow groundwater table on crop water requirement and crop yields. Agricultural Water Management 76, 24–35 (2005).