Galanin, M. P., and T. G. Yelenina. “Nonlinear Monotonization of the Babenko Scheme”. Mathematical Modelling and Analysis 8, no. 2 (June 30, 2003): 113-120. Accessed December 22, 2024. https://jeelm.vgtu.lt/index.php/MMA/article/view/9768.