Belal, M. A.; El-Gazzar, M. M.; Tawfik, B. B. S.; Ibrahim, S. I. Leakage-Controlled Evaluation of Handcrafted-Deep Feature Fusion and Confidence Stacking for Four-Class Skin Lesion Classification. Stat., optim. inf. comput. 2026, 16, 3089–3102.