Čiupaila, Regimantas, Kristina Pupalaigė, and Mifodijus Sapagovas. “On the Numerical Solution for Nonlinear Elliptic Equations With Variable Weight Coefficients in an Integral Boundary Conditions”. Nonlinear Analysis: Modelling and Control 26, no. 4 (July 1, 2021): 738-758. Accessed July 7, 2022. https://www.journals.vu.lt/nonlinear-analysis/article/view/23929.