Pérez, María Gabriela, Angel Sanchez Calle, Ana Belen Moreno, Eldman Nunes, y Víctor Andaluz. «A Multi-Level Thresholding Method Based on Histogram Derivatives for Accurate Brain MRI Segmentation». Revista Politécnica 35, no. 2 (febrero 28, 2015): 82. Accedido agosto 8, 2020. https://revistapolitecnica.epn.edu.ec/ojs2/index.php/revista_politecnica2/article/view/382.