GORKOV, Y. Construction of the fundamental solution to a parabolic equation with degeneracy. Numerical Methods and Programming (Vychislitel’nye Metody i Programmirovanie), [S. l.], v. 6, n. 6, p. 66–70, 2005. Disponível em: https://en.num-meth.ru/index.php/journal/article/view/152. Acesso em: 27 apr. 2024.