2Liu Huihu, Sang Shuxun, Wang Gcoff G.X.. Block Scale In- vestigation on Gas Content of Coalbed Methane Reservoirs in Southern Qin- shui Basin with Statistical Modal and Visual Map [ J ]. Journal of Petroleum Science and Engineer, 2013, 114:1 ~ 14.
3Liu Chenglong, Wang Xianghao, Liu Kun. Occttrrence Features of Coalbed Methane in Inclined Coal Seam of Junggar Basin, Xinjiang [J]. Advanced Materials Research, 2014, 868:696~699.
4Kit Yen Cken, C.K.Kweng, B.Q.Hu.. Market Segmentation and Ideal Point Identification for New Product Design Using Fuzzy Data Compression and Fuzzy Clustering Methods [ J]. Applied Soft Computing, 2012, (12): 1371-1378.
