TYPES AND RESEARCH DIRECTION OF BIOGENIC GAS IN CHINA
LI Xian-qi +1, ZHANG Shui-chang +2, ZHU Guang-you +2, LIANG Ying-bo +2
Natural Gas Geoscience . 2005, (4): 477 -484 .  DOI: 10.11764/j.issn.1672-1926.2005.04.477