Research on influence of safety investment and technological innovation to economic benefits of extractive industry: threshold effect model
SHI Gonglong, ZHANG Yaoyi, LI Hongxia, TIAN Shuicheng, WANG Qian
China Safety Science Journal . 2022, (8): 9 -15 .  DOI: 10.16265/j.cnki.issn1003-3033.2022.08.1389