Cambrian sequence stratigraphic framework in the middle-northern North China
Xiao Fei, Wang Jianguo, Wu Heyuan, Wang Peixi, Zhao Zongju, Tian Jianzhang, Jiang Zaixing, Song Chungang, Tian Ran, Guo Zengqiang
Acta Petrolei Sinica . 2017, (10): 1144 -1157,1167 .  DOI: 10.7623/syxb201710005