Raza, A., Musa, S., Khalid, A. S., Alam, M. M., Su’ud, M. M., & Noor, F. (2025). Multiclass Diabetic Retinopathy: Hybrid Metaheuristic Particle Swarm Optimization and Classification for Severity Grading and Feature Extraction. Engineering, Technology & Applied Science Research, 15(6), 30317–30323. https://doi.org/10.48084/etasr.11147