Kokurin, M. (2003) “Approximation of solutions to irregular equations and attractors of nonlinear dynamical systems in Hilbert spaces”, Numerical Methods and Programming (Vychislitel’nye Metody i Programmirovanie), 4(4), pp. 207–215. Available at: https://en.num-meth.ru/index.php/journal/article/view/92 (Accessed: 14 December 2025).