WANG, Jing. Cause analysis of coal mine accidents in China based on principal component analysis. Academic Journal of Management Science and Engineering, [S. l.], v. 1, n. 1, p. 1–9, 2026. DOI: 10.62051/ajmse.v1n1.01. Disponível em: https://ajomse.com/index.php/ojs/article/view/2. Acesso em: 18 apr. 2026.