Dixit, Sharad Kumar. “A Simplified Homotopy Perturbation Method for Solving Nonlinear Ill-Posed Operator Equations in Hilbert Spaces”. J. Numer. Anal. Approx. Theory 54, no. 2 (December 15, 2025): 237–254. Accessed December 17, 2025. https://ictp.acad.ro/jnaat/journal/article/view/1544.