E. Widjaja, A., H. Hery, and D. Habsara Hareva. “The Office Room Security System Using Face Recognition Based on Viola-Jones Algorithm and RBFN”. INTENSIF: Jurnal Ilmiah Penelitian Dan Penerapan Teknologi Sistem Informasi, vol. 5, no. 1, Feb. 2021, pp. 1-12, doi:10.29407/intensif.v5i1.14435.