Kamarowski, B., 		Almeida, R., 		Biesseck, B., 		Granada, R., 		Coelho, L., & 		Menotti, D.
2024 set 30.  Hybrid method for active face anti-spoofing based on close-up challenge. Anais Estendidos da Conference on Graphics, Patterns and Images (SIBGRAPI). [Online] :