MalytskaH.P., and BurtnyakI.V. “On Stabilization of Poisson Integral for Equations of Kolmogorov Type”. Carpathian Mathematical Publications 5, no. 2 (December 30, 2013): 290-297. Accessed October 4, 2023. https://journals.pnu.edu.ua/index.php/cmp/article/view/1319.