Evstigneev, N. “Numerical Integration of Poisson’s Equation Using a Graphics Processing Unit With CUDA-Technology”. Numerical Methods and Programming (Vychislitel’nye Metody I Programmirovanie), vol. 10, no. 20, Nov. 2020, pp. 268-74, https://en.num-meth.ru/index.php/journal/article/view/1119.