Antonio Velázquez, J.A. et al. 2024. Automatic detection of face with mask to prevent COVID contagion, using LBP algorithm embedded in Rasp-Berry Pi and use of audible alert. Nexo Scientific Journal. 37, 2 (Dec. 2024), 103–121. DOI:https://doi.org/10.5377/nsj.v37i2.18768.