Green production-clean technology and eco-efficiency keys for sustainability. Periodicals of Engineering and Natural Sciences, [S. l.], v. 9, n. 2, p. 347–358, 2021. DOI: 10.21533/pen.v9.i2.743. Disponível em: https://pen.ius.edu.ba/index.php/pen/article/view/743. Acesso em: 12 oct. 2025.