M. Almufti, S., R. . B. Marqas, Z. . A. Nayef, and T. . S. Mohamed. “Real Time Face-Mask Detection With Arduino to Prevent COVID-19 Spreading”. Qubahan Academic Journal, vol. 1, no. 2, Apr. 2021, pp. 39-46, doi:10.48161/qaj.v1n2a47.