Birgelis, Karlis, and Uldis Raitums. “Strictly Convergent Algorithm for an Elliptic Equation With Nonlocal and Nonlinear Boundary Conditions”. Mathematical Modelling and Analysis 17, no. 1 (February 1, 2012): 128-139. Accessed December 22, 2024. https://journals.vilniustech.lt/index.php/MMA/article/view/4840.