J. Carmona, A. J. Martínez Aparicio, P. J. Martínez-Aparicio, and M. Martínez-Teruel, “Regularizing effect in singular semilinear problems”, MMA, vol. 28, no. 4, pp. 561–580, Oct. 2023, doi: 10.3846/mma.2023.18616.