Esparza Encalada, Willam Ricardo, et al. “Manufacture of a Non-Woven Using Bamboo Cellulose Base (angustifolia) As a Filter Medium for the Manufacture of Masks”. International Journal for Innovation Education and Research, vol. 8, no. 12, Dec. 2020, pp. 324-32, https://doi.org/10.31686/ijier.vol8.iss12.2852.