R. Fuentes-Alvarez, M. Alfaro-Ponce, F. Alvarado, J. A. Mora-Galvan, R. Q. Fuentes-Aguilar, and I. Matehuala Moran, “Full-face mask adapter as COVID-19 Personal Protective Equipment: design, tests and validation”, IEEE LAT AM T, vol. 19, no. 6, pp. 986–993, Jun. 2021.