MALYTSKA, H.P. The systems of the equations of Kolmogorov’s type of second oder: Array. Carpathian Mathematical Publications, [S. l.], v. 1, n. 2, p. 180–190, 2009. Disponível em: https://scijournals.pnu.edu.ua/index.php/cmp/article/view/4013. Acesso em: 28 mar. 2024.