@article{Siebert_2015,
title={A global data set of the extent of irrigated land from 1900 to 2005},
volume={19},
ISSN={1607-7938},
url={http://dx.doi.org/10.5194/hess-19-1521-2015},
DOI={10.5194/hess-19-1521-2015},
number={3},
journal={Hydrology and Earth System Sciences},
publisher={Copernicus GmbH},
author={Siebert,
S. and Kummu,
M. and Porkka,
M. and Döll,
P. and Ramankutty,
N. and Scanlon,
B. R.},
year={2015},
month=mar,
pages={1521–1545} }