Extraction and Analysis of the Methane Trapped in Ice Core by Melting-Refreezing Method
XU Bai-qing, YAO Tan-dong, Chappellaz J
JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY . 2002, (2): 116 -120 .  DOI: 10.7522/j.issn.1000-0240.2002.0020