Assessing the Vulnerability of Ecosystem Services of Beijing-Tianjin-Hebei Area Based on Radial Basis Function Network
LIU Jinlong,MA Cheng,WANG Yang,FENG Zhe,LI Shuangcheng
Acta Scientiarum Naturalium Universitatis Pekinensis . 2013, (6): 1040 -1046 . 

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