Influence of coalification on microstructure characteristics of coal surface
LIU Huifang, SONG Dazhao, HE Xueqiu, TIAN Xianghui, LOU Quan, WANG Weixiang
China Safety Science Journal . 2020, (1): 121 -127 .  DOI: 10.16265/j.cnki.issn1003-3033.2020.01.019