KUMAR, B.; PAURUSH, P.; SHARMA, S. K.; PRASAD SINGH, G. S. Assessment of coal pillar stability using principal component analysis and stepwise selection and elimination. Journal of Mines, Metals and Fuels, [S. l.], v. 69, n. 3, p. 81–87, 2021. DOI: 10.18311/jmmf/2021/27783. Disponível em: https://informaticsjournals.com/index.php/jmmf/article/view/27783. Acesso em: 24 jun. 2024.