@article {8515,
	title = {Prolonged limitation of tree growth due to warmer spring in semi-arid mountain forests of Tianshan, Northwest China},
	journal = {Environmental Research Letters},
	year = {2013},
	doi = {10.1088/1748-9326/8/2/024016},
	author = {Xiuchen Wu and Hongyan Liu and Yufu Wang and Minghua Deng}
}
