Smith 1971, p. 58; length: Hartung & Kuros 1987, p. 246; orchards: Shushtar Historical Hydraulic System, UNESCO, retrieved on 1 May 2010 Smith, Norman (1971), A History of Dams, London: Peter Davies, pp. 56–61, ISBN0-432-15090-0 Hartung, Fritz; Kuros, Gh. R. (1987), "Historische Talsperren im Iran", in Garbrecht, Günther (ed.), Historische Talsperren, vol. 1, Stuttgart: Verlag Konrad Wittwer, pp. 221–274, ISBN3-87919-145-X
