TheSpectralAnalysisfor a Lam ina ThicknessSeriesof a Stalagm ite in Beijing and the Clim ateVariation in Last1 ka
QIN Xiao-guang, LIU Tong-sheng, TAN Ming, WANGXian-feng
Acta Geographica Sinica . 1999, (6): 543 -549 .  DOI: 10.11821/xb199906008