融资约束对煤炭企业安全投入的影响研究
郑毅, 尹玉文, 应丽莹
Study on effects of financing constraints on coal enterprises safety investment
ZHENG Yi, YIN Yuwen, YING Liying
中国安全科学学报 . 2017, (1): 151 -156 .  DOI: 10.16265/j.cnki.issn1003-3033.2017.01.027