ANDRUSIAK, Ivanna; BRODYAK, Oksana. Integral Representations Of Positive Definite Kernels For Second-Order Elliptic Operators. PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY. Number, [S. l.], n. 22(83), p. 18–28, 2026. DOI: 10.31471/2304-7399-2026-22(83)-18-28. Disponível em: https://pvntsh.nung.edu.ua/index.php/number/article/view/2230. Acesso em: 25 apr. 2026.