Campos, A., P. Melin, and D. Sanchez. “Type-1 and Type-2 Fuzzy Parameter Adaptation in PSO for CNN Architecture Optimization Applied to Facial Emotion Recognition”. International Journal of Combinatorial Optimization Problems and Informatics, vol. 17, no. 4, Aug. 2026, pp. 152-70, doi:10.61467/2007.1558.2026.v17i4.1486.