Burtnyak IV, Malyts’ka HP. On the fundamental solution of the Cauchy problem for Kolmogorov systems of the second order. Ukr. Mat. Zhurn. [Internet]. 2018Aug.25 [cited 2024Nov.21];70(8):1107-1. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/1621