PASHAIE, Sajjad; FISNE, Mucahit; HABIBPOUR, Romina. Design and Fabrication of Two-Filter Nano SL Mask to Deal with Covid-19. Journal of Liaquat University of Medical & Health Sciences, [S. l.], v. 20, n. 02, p. 88–95, 2021. Disponível em: http://ojs.lumhs.edu.pk/index.php/jlumhs/article/view/684. Acesso em: 5 dec. 2025.