Labib, R.P.M.D., Hadi, S. and Widayaka, P.D. (2021) “Low Cost System for Face Mask Detection Based Haar Cascade Classifier Method”, MATRIK : Jurnal Manajemen, Teknik Informatika dan Rekayasa Komputer, 21(1), pp. 21–30. doi:10.30812/matrik.v21i1.1187.