@article{Kukla_1989,
title={Loess stratigraphy in Central China},
volume={72},
ISSN={0031-0182},
url={http://dx.doi.org/10.1016/0031-0182(89)90143-0},
DOI={10.1016/0031-0182(89)90143-0},
journal={Palaeogeography,
Palaeoclimatology,
Palaeoecology},
publisher={Elsevier BV},
author={Kukla,
George and An,
Zhisheng},
year={1989},
month=jan,
pages={203–225} }