HONG Han-lie, XUE Hui-juan, ZHANG Ke-xin, ZHU Yun-hai, XIANG Shu-yuan, FANG Jie, 2007. Occurrence of Palygorskite in Late Oligocene in Linxia Basin and Its Geological and Climatic Indicator. Earth Science, 32(5): 598-604.
HONG Han-lie, XUE Hui-juan, ZHANG Ke-xin, ZHU Yun-hai, XIANG Shu-yuan, FANG Jie, 2007. Occurrence of Palygorskite in Late Oligocene in Linxia Basin and Its Geological and Climatic Indicator. Earth Science, 32(5): 598-604.