KOLOMIETS, V. G.; RYBACHOK, A. V. Integration of the Kolmogorov-Fokker-Planck equation by generalized separation of arguments . Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 40, n. 5, p. 635–639, 1988. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8814. Acesso em: 14 apr. 2025.