Geochemical characteristics and origin of Permian and Triassic natural gas in Yuanba-Tongnanba area, northeastern Sichuan Basin
Liu Jingdong, Liu Guangxiang, Wang Liangshu, Wu Xiaoqi
ACTA PETROLEI SINICA . 2014, (3): 417 -428 .  DOI: 10.7623/syxb201403002