Pupalaigė, Kristina, Mifodijus Sapagovas, and Regimantas Čiupaila. “Nonlinear Elliptic Equation With Nonlocal Integral Boundary Condition Depending on Two Parameters”. Mathematical Modelling and Analysis 27, no. 4 (November 10, 2022): 610–628. Accessed December 22, 2024. https://jeelm.vgtu.lt/index.php/MMA/article/view/16209.