M. P, D. D, J. S, K. P, P. S, and P. S, “A Dual-Stage Deep Lesion Segmentation Framework with Gradient and Boundary Optimization for Diabetic Retinopathy Retinal Images”, j.electron.electromedical.eng.med.inform, vol. 8, no. 4, pp. 1314-1330, Aug. 2026.