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Zircon  U-Pb Dating of Several Selected Alkali-rich Porphyries from the Jinshajiang-Ailaoshan Fault Zone and Geological Significance 
LI Yong,MO Xuan-xue,YU Xue-hui,HUANG Xing-kai, HE Wen-yan
Geoscience . 2011, (2): 189 -200 .