@article{Simonsen_2016, title={Peter Christensen: The Decline of Iranshahr. Irrigation and Environment in the Middle East, 500 BC – AD 1500. I. B. Tauris & Co Ltd., London, 2016.}, volume={115}, url={https://tidsskrift.dk/historisktidsskrift/article/view/56775}, number={2}, journal={Historisk Tidsskrift}, author={Simonsen, Jørgen Bæk}, year={2016}, month={apr.} }