1. Abdullah, S., and Chmyriov, V.M., editors, 2008, Geology and mineral resources of Afghanistan, Book 1, Geology: Ministry of Mines and Industries of the Democratic Republic of Afghanistan, Afghanistan Geological Survey, 15, p. 488. British Geological Survey Occasional Publication.
2. Banks, D., 2001, Guidelines for sustainable use of groundwater in Afghanistan: Report for Norwegian Church Aid, p. 62.