L. R. P. Duarte, C. E. Miola, N. J. F. Cavalcante, and R. H. Bammann, “Maintenance status of N95 respirator masks after use in a health care setting”, Rev. Esc. Enferm. USP, vol. 44, no. 4, pp. 1011–1016, Dec. 2010, doi: 10.1590/S0080-62342010000400022.