Castro-Coria, M., A. Camarena-Ibarrola, and K. Figueroa. “A New Robust Model for Heart Disease Detection on PCG Signals Using Entropygrams and a CNN”. International Journal of Combinatorial Optimization Problems and Informatics, vol. 16, no. 4, Oct. 2025, pp. 416-30, doi:10.61467/2007.1558.2025.v16i4.1031.