Alarcón-Paredes, D., Alonso-Silverio, G., Guzmán-Guzmán, I. P., Ventura-Molina, E. and Alarcón-Paredes, A. (2026) “Progressive Transfer Learning in Hybrid CNN-Transformer Architectures for Robust Diabetic Retinopathy Grading”, International Journal of Combinatorial Optimization Problems and Informatics, 18(1), pp. 332–353. doi: 10.61467/2007.1558.2027.v18i1.1532.