Frengki Alfredo Matondang, S. L. Lestari, Dinda Syafitri, Kayla Amelia Putri, and Hermawan Syahputra, “Smart Absen Implementation of a Facial Recognition-Based Student Attendance System Using the Haar Cascade Method and LBPH”, j. of artif. intell. and eng. appl., vol. 5, no. 3, pp. 3885–3891, Jun. 2026.